rt-thread-stm32f072/libraries/HAL_Drivers/drv_flash/drv_flash_g0.c

231 lines
5.3 KiB
C

/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-06-27 NU-LL first version
*/
#include "board.h"
#ifdef BSP_USING_ON_CHIP_FLASH
#include "drv_config.h"
#include "drv_flash.h"
#if defined(RT_USING_FAL)
#include "fal.h"
#endif
// #define DRV_DEBUG
#define LOG_TAG "drv.flash"
#include <drv_log.h>
/**
* @brief Gets the page of a given address
* @param Addr: Address of the FLASH Memory
* @retval The page of a given address
*/
static uint32_t GetPage(uint32_t addr)
{
uint32_t page = 0;
page = RT_ALIGN_DOWN(addr-STM32_FLASH_START_ADRESS, FLASH_PAGE_SIZE)/FLASH_PAGE_SIZE;
return page;
}
/**
* Read data from flash.
* @note This operation's units is word.
*
* @param addr flash address
* @param buf buffer to store read data
* @param size read bytes size
*
* @return result
*/
int stm32_flash_read(rt_uint32_t addr, rt_uint8_t *buf, size_t size)
{
size_t i;
if ((addr + size) > STM32_FLASH_END_ADDRESS)
{
LOG_E("read outrange flash size! addr is (0x%p)", (void *)(addr + size));
return -RT_EINVAL;
}
for (i = 0; i < size; i++, buf++, addr++)
{
*buf = *(rt_uint8_t *) addr;
}
return size;
}
/**
* Write data to flash.
* @note This operation's units is word.
* @note This operation must after erase. @see flash_erase.
*
* @param addr flash address
* @param buf the write data buffer
* @param size write bytes size
*
* @return result
*/
int stm32_flash_write(rt_uint32_t addr, const uint8_t *buf, size_t size)
{
size_t i, j;
rt_err_t result = 0;
rt_uint64_t write_data = 0, temp_data = 0;
if ((addr + size) > STM32_FLASH_END_ADDRESS)
{
LOG_E("ERROR: write outrange flash size! addr is (0x%p)\n", (void*)(addr + size));
return -RT_EINVAL;
}
if(addr % 8 != 0)
{
LOG_E("write addr must be 8-byte alignment");
return -RT_EINVAL;
}
HAL_FLASH_Unlock();
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGSERR);
if (size < 1)
{
return -RT_ERROR;
}
for (i = 0; i < size;)
{
if ((size - i) < 8)
{
for (j = 0; (size - i) > 0; i++, j++)
{
temp_data = *buf;
write_data = (write_data) | (temp_data << 8 * j);
buf ++;
}
}
else
{
for (j = 0; j < 8; j++, i++)
{
temp_data = *buf;
write_data = (write_data) | (temp_data << 8 * j);
buf ++;
}
}
/* write data */
if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, addr, write_data) == HAL_OK)
{
/* Check the written value */
if (*(uint64_t*)addr != write_data)
{
LOG_E("ERROR: write data != read data\n");
result = -RT_ERROR;
goto __exit;
}
}
else
{
result = -RT_ERROR;
goto __exit;
}
temp_data = 0;
write_data = 0;
addr += 8;
}
__exit:
HAL_FLASH_Lock();
if (result != 0)
{
return result;
}
return size;
}
/**
* Erase data on flash.
* @note This operation is irreversible.
* @note This operation's units is different which on many chips.
*
* @param addr flash address
* @param size erase bytes size
*
* @return result
*/
int stm32_flash_erase(rt_uint32_t addr, size_t size)
{
rt_err_t result = RT_EOK;
uint32_t PAGEError = 0;
/*Variable used for Erase procedure*/
FLASH_EraseInitTypeDef EraseInitStruct;
if ((addr + size) > STM32_FLASH_END_ADDRESS)
{
LOG_E("ERROR: erase outrange flash size! addr is (0x%p)\n", (void *)(addr + size));
return -RT_EINVAL;
}
HAL_FLASH_Unlock();
/* Fill EraseInit structure*/
EraseInitStruct.TypeErase = FLASH_TYPEERASE_PAGES;
EraseInitStruct.Page = GetPage(addr);
EraseInitStruct.NbPages = (size + FLASH_PAGE_SIZE - 1) / FLASH_PAGE_SIZE;
if (HAL_FLASHEx_Erase(&EraseInitStruct, &PAGEError) != HAL_OK)
{
result = -RT_ERROR;
goto __exit;
}
__exit:
HAL_FLASH_Lock();
if (result != RT_EOK)
{
return result;
}
LOG_D("erase done: addr (0x%p), size %d", (void *)addr, size);
return size;
}
#if defined(RT_USING_FAL)
static int fal_flash_read(long offset, rt_uint8_t *buf, size_t size);
static int fal_flash_write(long offset, const rt_uint8_t *buf, size_t size);
static int fal_flash_erase(long offset, size_t size);
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} };
static int fal_flash_read(long offset, rt_uint8_t *buf, size_t size)
{
return stm32_flash_read(stm32_onchip_flash.addr + offset, buf, size);
}
static int fal_flash_write(long offset, const rt_uint8_t *buf, size_t size)
{
return stm32_flash_write(stm32_onchip_flash.addr + offset, buf, size);
}
static int fal_flash_erase(long offset, size_t size)
{
return stm32_flash_erase(stm32_onchip_flash.addr + offset, size);
}
#endif
#endif /* BSP_USING_ON_CHIP_FLASH */