292 lines
6.7 KiB
C
292 lines
6.7 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-12-5 SummerGift first version
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*/
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#include "board.h"
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#ifdef BSP_USING_ON_CHIP_FLASH
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#include "drv_config.h"
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#include "drv_flash.h"
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#if defined(RT_USING_FAL)
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#include "fal.h"
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#endif
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//#define DRV_DEBUG
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#define LOG_TAG "drv.flash"
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#include <drv_log.h>
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/**
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* @brief Gets the page of a given address
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* @param Addr: Address of the FLASH Memory
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* @retval The page of a given address
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*/
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static uint32_t GetPage(uint32_t Addr)
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{
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uint32_t page = 0;
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if (Addr < (FLASH_BASE + FLASH_BANK_SIZE))
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{
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/* Bank 1 */
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page = (Addr - FLASH_BASE) / FLASH_PAGE_SIZE;
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}
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else
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{
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/* Bank 2 */
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page = (Addr - (FLASH_BASE + FLASH_BANK_SIZE)) / FLASH_PAGE_SIZE;
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}
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return page;
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}
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/**
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* @brief Gets the bank of a given address
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* @param Addr: Address of the FLASH Memory
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* @retval The bank of a given address
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*/
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static uint32_t GetBank(uint32_t Addr)
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{
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uint32_t bank = 0;
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#ifndef FLASH_BANK_2
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bank = FLASH_BANK_1;
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#else
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if (READ_BIT(SYSCFG->MEMRMP, SYSCFG_MEMRMP_FB_MODE) == 0)
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{
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/* No Bank swap */
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if (Addr < (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 (Addr < (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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#endif
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return bank;
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}
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/**
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* Read data from flash.
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* @note This operation's units is word.
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*
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* @param addr flash address
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* @param buf buffer to store read data
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* @param size read bytes size
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*
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* @return result
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*/
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int stm32_flash_read(rt_uint32_t addr, rt_uint8_t *buf, size_t size)
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{
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size_t i;
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if ((addr + size) > STM32_FLASH_END_ADDRESS)
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{
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LOG_E("read outrange flash size! addr is (0x%p)", (void*)(addr + size));
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return -RT_EINVAL;
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}
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for (i = 0; i < size; i++, buf++, addr++)
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{
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*buf = *(rt_uint8_t *) addr;
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}
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return size;
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}
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/**
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* Write data to flash.
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* @note This operation's units is word.
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* @note This operation must after erase. @see flash_erase.
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*
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* @param addr flash address
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* @param buf the write data buffer
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* @param size write bytes size
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*
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* @return result
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*/
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int stm32_flash_write(rt_uint32_t addr, const uint8_t *buf, size_t size)
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{
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size_t i, j;
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rt_err_t result = 0;
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rt_uint64_t write_data = 0, temp_data = 0;
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if ((addr + size) > STM32_FLASH_END_ADDRESS)
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{
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LOG_E("ERROR: write outrange flash size! addr is (0x%p)\n", (void*)(addr + size));
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return -RT_EINVAL;
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}
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if(addr % 8 != 0)
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{
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LOG_E("write addr must be 8-byte alignment");
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return -RT_EINVAL;
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}
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HAL_FLASH_Unlock();
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGSERR);
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if (size < 1)
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{
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return -RT_ERROR;
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}
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for (i = 0; i < size;)
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{
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if ((size - i) < 8)
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{
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for (j = 0; (size - i) > 0; i++, j++)
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{
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temp_data = *buf;
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write_data = (write_data) | (temp_data << 8 * j);
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buf ++;
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}
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}
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else
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{
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for (j = 0; j < 8; j++, i++)
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{
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temp_data = *buf;
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write_data = (write_data) | (temp_data << 8 * j);
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buf ++;
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}
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}
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/* write data */
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, addr, write_data) == HAL_OK)
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{
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/* Check the written value */
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if (*(uint64_t*)addr != write_data)
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{
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LOG_E("ERROR: write data != read data\n");
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result = -RT_ERROR;
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goto __exit;
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}
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}
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else
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{
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result = -RT_ERROR;
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goto __exit;
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}
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temp_data = 0;
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write_data = 0;
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addr += 8;
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}
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__exit:
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HAL_FLASH_Lock();
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if (result != 0)
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{
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return result;
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}
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return size;
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}
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/**
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* Erase data on flash.
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* @note This operation is irreversible.
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* @note This operation's units is different which on many chips.
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*
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* @param addr flash address
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* @param size erase bytes size
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*
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* @return result
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*/
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int stm32_flash_erase(rt_uint32_t addr, size_t size)
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{
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rt_err_t result = RT_EOK;
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uint32_t FirstPage = 0, NbOfPages = 0, BankNumber = 0;
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uint32_t PAGEError = 0;
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if ((addr + size) > STM32_FLASH_END_ADDRESS)
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{
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LOG_E("ERROR: erase outrange flash size! addr is (0x%p)\n", (void*)(addr + size));
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return -RT_EINVAL;
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}
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/*Variable used for Erase procedure*/
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FLASH_EraseInitTypeDef EraseInitStruct;
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/* Unlock the Flash to enable the flash control register access *************/
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HAL_FLASH_Unlock();
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/* Clear OPTVERR bit set on virgin samples */
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__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_OPTVERR | FLASH_FLAG_PGSERR);
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/* Get the 1st page to erase */
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FirstPage = GetPage(addr);
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/* Get the number of pages to erase from 1st page */
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NbOfPages = GetPage(addr + size - 1) - FirstPage + 1;
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/* Get the bank */
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BankNumber = GetBank(addr);
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/* Fill EraseInit structure*/
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EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;
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EraseInitStruct.Banks = BankNumber;
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EraseInitStruct.Page = FirstPage;
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EraseInitStruct.NbPages = NbOfPages;
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if (HAL_FLASHEx_Erase(&EraseInitStruct, &PAGEError) != HAL_OK)
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{
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result = -RT_ERROR;
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goto __exit;
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}
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__exit:
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HAL_FLASH_Lock();
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if (result != RT_EOK)
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{
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return result;
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}
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LOG_D("erase done: addr (0x%p), size %d", (void*)addr, size);
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return size;
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}
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#if defined(RT_USING_FAL)
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static int fal_flash_read(long offset, rt_uint8_t *buf, size_t size);
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static int fal_flash_write(long offset, const rt_uint8_t *buf, size_t size);
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static int fal_flash_erase(long offset, size_t size);
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const struct fal_flash_dev stm32_onchip_flash = { "onchip_flash", STM32_FLASH_START_ADRESS, STM32_FLASH_SIZE, FLASH_PAGE_SIZE, {NULL, fal_flash_read, fal_flash_write, fal_flash_erase} };
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static int fal_flash_read(long offset, rt_uint8_t *buf, size_t size)
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{
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return stm32_flash_read(stm32_onchip_flash.addr + offset, buf, size);
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}
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static int fal_flash_write(long offset, const rt_uint8_t *buf, size_t size)
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{
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return stm32_flash_write(stm32_onchip_flash.addr + offset, buf, size);
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}
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static int fal_flash_erase(long offset, size_t size)
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{
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return stm32_flash_erase(stm32_onchip_flash.addr + offset, size);
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}
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#endif
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#endif /* BSP_USING_ON_CHIP_FLASH */
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