274 lines
6.3 KiB
C
274 lines
6.3 KiB
C
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/*
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* Copyright (c) 2006-2018, 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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* 2020-03-05 redoc support stm32f103vg
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*
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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(PKG_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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page = RT_ALIGN_DOWN(addr, FLASH_PAGE_SIZE);
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return page;
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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 rt_uint8_t *buf, size_t size)
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{
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rt_err_t result = RT_EOK;
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rt_uint32_t end_addr = addr + size;
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if (addr % 4 != 0)
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{
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LOG_E("write addr must be 4-byte alignment");
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return -RT_EINVAL;
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}
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if ((end_addr) > STM32_FLASH_END_ADDRESS)
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{
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LOG_E("write 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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HAL_FLASH_Unlock();
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while (addr < end_addr)
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{
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if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, addr, *((rt_uint32_t *)buf)) == HAL_OK)
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{
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if (*(rt_uint32_t *)addr != *(rt_uint32_t *)buf)
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{
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result = -RT_ERROR;
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break;
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}
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addr += 4;
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buf += 4;
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}
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else
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{
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result = -RT_ERROR;
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break;
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}
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}
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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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return size;
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}
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/**
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* Erase data on flash with bank.
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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 bank flash bank
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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_bank(uint32_t bank, 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 PAGEError = 0;
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/*Variable used for Erase procedure*/
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FLASH_EraseInitTypeDef EraseInitStruct;
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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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HAL_FLASH_Unlock();
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/* Fill EraseInit structure*/
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EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;
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EraseInitStruct.PageAddress = GetPage(addr);
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EraseInitStruct.NbPages = (size + FLASH_PAGE_SIZE - 1) / FLASH_PAGE_SIZE;
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EraseInitStruct.Banks = bank;
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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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/**
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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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#if defined(FLASH_BANK2_END)
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rt_err_t result = RT_EOK;
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rt_uint32_t addr_bank1 = 0;
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rt_uint32_t size_bank1 = 0;
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rt_uint32_t addr_bank2 = 0;
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rt_uint32_t size_bank2 = 0;
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if((addr + size) <= FLASH_BANK1_END)
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{
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addr_bank1 = addr;
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size_bank1 = size;
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size_bank2 = 0;
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}
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else if(addr > FLASH_BANK1_END)
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{
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size_bank1 = 0;
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addr_bank2 = addr;
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size_bank2 = size;
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}
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else
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{
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addr_bank1 = addr;
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size_bank1 = FLASH_BANK1_END + 1 - addr_bank1;
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addr_bank2 = FLASH_BANK1_END + 1;
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size_bank2 = addr + size - (FLASH_BANK1_END + 1);
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}
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if(size_bank1)
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{
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LOG_D("bank1: addr (0x%p), size %d", (void *)addr_bank1, size_bank1);
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if(size_bank1 != stm32_flash_erase_bank(FLASH_BANK_1, addr_bank1, size_bank1))
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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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}
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if(size_bank2)
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{
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LOG_D("bank2: addr (0x%p), size %d", (void *)addr_bank2, size_bank2);
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if(size_bank2 != stm32_flash_erase_bank(FLASH_BANK_2, addr_bank2, size_bank2))
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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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}
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__exit:
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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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return size_bank1 + size_bank2;
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#else
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return stm32_flash_erase_bank(FLASH_BANK_1, addr, size);
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#endif
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}
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#if defined(PKG_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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