외부 플래시 사용¶

#define BSP_USING_QSPI 1            /*使能QSPI 模块*/
#define BSP_USING_SPI_FLASH 1       /*使能QSPI 控制FLASH功能（为了兼容以前版本）*/
#define BSP_ENABLE_QSPI1 1          /*使能QSPI控制器1*/
#define BSP_QSPI1_USING_DMA 1       /*QSPI1 使用FIFO DMA */
#define BSP_QSPI1_MODE 0            /*QSPI1 连接控制Nor FLASH*/
#define BSP_QSPI1_MEM_SIZE 4        /*配置FLASH1的总大小为4MB*/
#define BSP_QSPI1_CHIP_ID 0         /*FLASH1 DEV ID 由系统获取，不需要手动输入（这个配置是为了当有些FLASH获取ID的命令时序与默认设置不同时，手动添加ID以便查找正确的命令表）*/

#define BSP_ENABLE_QSPI2 1          /*使能QSPI2 模块*/
#define BSP_QSPI2_USING_DMA 1       /*使能QSPI2 FIFO DMA <*/
#define BSP_QSPI2_MODE 0            /*设置FLASH2 为NOR-FLASH*/
#define BSP_QSPI2_MTD_EN 1          /*FLASH2 注册MTD 设备 */
#define BSP_QSPI2_FS_START 2048     /*FLASH2 MTD 设备可访问地址的起始位置为8MB(2048*4K)*/
#define BSP_QSPI2_FS_SIZE 2048      /*长度为8MB(2048*4KB)*/
#define BSP_QSPI2_MEM_SIZE 32       /*配置FLASH2的总大小为32MB*/
#define BSP_QSPI2_CHIP_ID 0         /*FLASH2 DEV ID 由系统获取，不需要手动输入*/

#define BSP_ENABLE_QSPI3 1          /*使能QSPI3 模块*/
#define BSP_QSPI3_USING_DMA 1       /*使能QSPI3 FIFO DMA <*/
#define BSP_QSPI3_MODE 1            /*设置FLASH3 为NAND-FLASH*/
#define BSP_QSPI3_MEM_SIZE 128      /*配置FLASH3的总大小为128MB*/
#define BSP_QSPI3_CHIP_ID 0         /*FLASH3 DEV ID 由系统获取，不需要手动输入*/

#define BSP_USING_MPI 1             /*使能MPI 模块*/
#define BSP_USING_SPI_FLASH 1       /*使能MPI 控制FLASH功能（为了兼容之前版本）*/

#define BSP_ENABLE_MPI1 1           /*使能MPI 1 模块*/
#define BSP_ENABLE_QSPI1 1          /*使能MPI 1（为了兼容之前版本）*/
#define BSP_MPI1_MODE_4 1           /*MPI1 设置为功能4---16线PSRAM*/
#define BSP_QSPI1_MODE 4
#define BSP_USING_PSRAM1 1
#define BSP_QSPI1_MEM_SIZE 32       /*Source value; verify its size encoding for the target SDK release.*/

#define BSP_ENABLE_MPI2 1           /*使能MPI 2 模块*/
#define BSP_ENABLE_QSPI2 1          /*使能MPI 2（为了兼容之前版本）*/
#define BSP_MPI2_MODE_4 1           /*MPI2 设置为功能4---16线PSRAM*/
#define BSP_QSPI2_MODE 4
#define BSP_USING_PSRAM2 1
#define BSP_QSPI2_MEM_SIZE 32       /*配置MPI2的总大小为32MB*/

#define BSP_ENABLE_MPI3 1           /*使能MPI 3 模块*/
#define BSP_ENABLE_QSPI3 1          /*使能MPI 3（为了兼容之前版本）*/
#define BSP_MPI3_MODE_0 1           /*MPI3 设置为功能0---NOR FLASH*/
#define BSP_QSPI3_MODE 0
#define BSP_USING_NOR_FLASH3 1
#define BSP_QSPI3_USING_DMA 1       /*MPI3 使用DMA*/
#define BSP_QSPI3_MEM_SIZE 32       /*配置MPI3的总大小为32MB*/

#define BSP_ENABLE_MPI4 1           /*使能MPI 4 模块*/
#define BSP_ENABLE_QSPI4 1          /*使能MPI 4（为了兼容之前版本）*/
#define BSP_MPI4_MODE_1 1           /*MPI4 设置为功能1---NAND FLASH*/
#define BSP_QSPI4_MODE 1
#define BSP_USING_NAND_FLASH4 1
#define BSP_QSPI4_USING_DMA 1       /*MPI4 使用DMA*/
#define BSP_QSPI4_MEM_SIZE 128      /*Source comment says 128 MB; verify against the target device and SDK.*/

#define BSP_ENABLE_MPI5 1           /*使能MPI 5 模块*/
#define BSP_ENABLE_QSPI5 1          /*使能MPI 5（为了兼容之前版本）*/
#define BSP_MPI5_MODE_0 1           /*MPI5 设置为功能0---NOR FLASH*/
#define BSP_QSPI5_MODE 0
#define BSP_USING_NOR_FLASH5 1
#define BSP_QSPI5_USING_DMA 1       /*MPI5 使用DMA*/
#define BSP_QSPI5_MEM_SIZE 4        /*配置MPI5的总大小为4MB*/

#define QSPI1_MEM_BASE   (0x10000000)
#define QSPI2_MEM_BASE   (0x64000000)
#define QSPI3_MEM_BASE   (0x68000000)
#define QSPI4_MEM_BASE   (0x12000000)

#define QSPI1_MEM_BASE   (0x10000000)
#define QSPI2_MEM_BASE   (0x12000000)
#define QSPI3_MEM_BASE   (0x14000000)
#define QSPI4_MEM_BASE   (0x18000000)
#define QSPI5_MEM_BASE   (0x1C000000)

#define QSPI1_MEM_BASE   (0x10000000)
#define QSPI2_MEM_BASE   (0x10800000)
#define QSPI3_MEM_BASE   (0x14000000)
#define QSPI5_MEM_BASE   (0x1C000000)

int rt_hw_flash_init(void);
int rt_flash_read(rt_uint32_t addr, rt_uint8_t *buf, size_t size);
int rt_flash_write(rt_uint32_t addr, const rt_uint8_t *buf, size_t size);
rt_err_t rt_flash_erase(rt_uint32_t addr, size_t size);

#include <rtthread.h>
#include <string.h>

#define TEST_SIZE 4096u /* Set to the device erase granularity; reserve a full test region. */

static int flash_nor_round_trip(rt_uint32_t address)
{
    rt_uint8_t *write_buf = RT_NULL;
    rt_uint8_t *read_buf = RT_NULL;
    int result = RT_ERROR;

    if ((address % TEST_SIZE) != 0)
        return RT_ERROR;

    write_buf = rt_malloc(TEST_SIZE);
    read_buf = rt_malloc(TEST_SIZE);
    if (write_buf == RT_NULL || read_buf == RT_NULL)
        goto cleanup;

    for (rt_size_t i = 0; i < TEST_SIZE; ++i)
        write_buf[i] = (rt_uint8_t)(i & 0xFFu);

    if (rt_flash_erase(address, TEST_SIZE) != RT_EOK)
        goto cleanup;
    if (rt_flash_write(address, write_buf, TEST_SIZE) != (int)TEST_SIZE)
        goto cleanup;
    if (rt_flash_read(address, read_buf, TEST_SIZE) != (int)TEST_SIZE)
        goto cleanup;
    if (memcmp(write_buf, read_buf, TEST_SIZE) != 0)
        goto cleanup;

    result = RT_EOK;

cleanup:
    if (read_buf != RT_NULL)
        rt_free(read_buf);
    if (write_buf != RT_NULL)
        rt_free(write_buf);
    return result;
}

struct rt_mtd_nor_device
{
    struct rt_device parent;

    rt_uint32_t block_size;         /* The Block size in the flash */
    rt_uint32_t block_start;        /* The start of available block*/
    rt_uint32_t block_end;          /* The end of available block */

    /* operations interface */
    const struct rt_mtd_nor_driver_ops* ops;
};

struct rt_mtd_nor_driver_ops
{
    rt_uint32_t (*read_id) (struct rt_mtd_nor_device* device);

    rt_size_t (*read)    (struct rt_mtd_nor_device* device, rt_off_t offset, rt_uint8_t* data, rt_uint32_t length);
    rt_size_t (*write)   (struct rt_mtd_nor_device* device, rt_off_t offset, const rt_uint8_t* data, rt_uint32_t length);

    rt_err_t (*erase_block)(struct rt_mtd_nor_device* device, rt_off_t offset, rt_uint32_t length);
};

rt_err_t rt_mtd_nor_register_device(const char* name, struct rt_mtd_nor_device* device);

struct rt_mtd_nand_device
{
    struct rt_device parent;

    rt_uint16_t page_size;          /* The Page size in the flash */
    rt_uint16_t oob_size;           /* Out-of-band (OOB) bytes per page */
    rt_uint16_t oob_free;           /* the free area in oob that flash driver not use */
    rt_uint16_t plane_num;          /* the number of plane in the NAND Flash */

    rt_uint32_t pages_per_block;    /* The number of page a block */
    rt_uint16_t block_total;

    rt_uint32_t block_start;        /* The start of available block*/
    rt_uint32_t block_end;          /* The end of available block */

    /* operations interface */
    const struct rt_mtd_nand_driver_ops* ops;
};

struct rt_mtd_nand_driver_ops
{
    rt_uint32_t (*read_id) (struct rt_mtd_nand_device* device);

    rt_err_t (*read_page)(struct rt_mtd_nand_device* device,
                          rt_off_t page,
                          rt_uint8_t* data, rt_uint32_t data_len,
                          rt_uint8_t * spare, rt_uint32_t spare_len);

    rt_err_t (*write_page)(struct rt_mtd_nand_device * device,
                           rt_off_t page,
                           const rt_uint8_t * data, rt_uint32_t data_len,
                           const rt_uint8_t * spare, rt_uint32_t spare_len);
    rt_err_t (*move_page) (struct rt_mtd_nand_device *device, rt_off_t src_page, rt_off_t dst_page);

    rt_err_t (*erase_block)(struct rt_mtd_nand_device* device, rt_uint32_t block);
    rt_err_t (*check_block)(struct rt_mtd_nand_device* device, rt_uint32_t block);
    rt_err_t (*mark_badblock)(struct rt_mtd_nand_device* device, rt_uint32_t block);
};

rt_err_t rt_mtd_nand_register_device(const char* name, struct rt_mtd_nand_device* device);

    // 注册MTD DEVICE
    struct rt_mtd_nor_device *nod = malloc(sizeof(struct rt_mtd_nor_device));

    nod->block_start = BSP_FLASH1_FS_START;
    nod->block_size = FLASH_SECT_SIZE;
    nod->block_end = nod->block_start + BSP_FLASH1_FS_SIZE;
    nod->ops = &flash_ops;
    nod->parent.user_data = &lflash_handle[0];
    lflash_handle[0].nod = nod;

    rt_mtd_nor_register_device("flash1", (struct rt_mtd_nor_device *)(lflash_handle[0].nod));

    // 查找MTD DEVICE:
    rt_device_t dev = rt_device_find("flash1");
    if (dev) // device find, it has beed registered to mtd
    {
        // MTD设备的使用，直接使用设备名，mkfs, mount都会去查找设备并调用设备的读写接口
        if (dfs_mkfs("elm", "flash1") == 0)
        {
          dfs_mount("flash1", "/", "elm", 0, 0);
          ....
        }
    }

#define FLASH_TABLE_SIZE            (20*1024)
#define FLASH_CAL_TABLE_SIZE        (8*1024)
#define FLASH_BOOT_PATCH_SIZE       (64*1024)

#define FLASH_BASE_ADDR             (0x10000000)
#define FLASH_TABLE_START_ADDR      (FLASH_BASE_ADDR)
#define FLASH_TABLE_END_ADDR        (END_ADDR(FLASH_TABLE_START_ADDR, FLASH_TABLE_SIZE))
#define FLASH_CAL_TABLE_START_ADDR  (FLASH_TABLE_END_ADDR+1)
#define FLASH_BOOT_PATCH_START_ADDR (0x10010000)
#define FLASH_BOOT_PATCH_END_ADDR   (END_ADDR(FLASH_BOOT_PATCH_START_ADDR, FLASH_BOOT_PATCH_SIZE)) /* 0x1001FFFF */
#define FLASH_USER_CODE_START_ADDR   (FLASH_BOOT_PATCH_END_ADDR + 1)   /* 0x10020000 */

/**
  * @brief  SPI_FLASH command index
  */
typedef enum
{
    SPI_FLASH_CMD_WREN = 0,  /*!<  write enable, nor+nand    */
    SPI_FLASH_CMD_WRDI,     /*!<  write disable, nor+nand    */
    SPI_FLASH_CMD_RDSR,     /*!<  read status register, nor+nand    */
    SPI_FLASH_CMD_WRSR,     /*!<  write status register, nor+nand    */
    SPI_FLASH_CMD_PREAD,    /*!<  page read, nand    */
    SPI_FLASH_CMD_READ,     /*!<  single line read, nor+nand    */
    SPI_FLASH_CMD_FREAD,    /*!<  fast read , nor + nand    */
    SPI_FLASH_CMD_DREAD,    /*!<  fast read dual output, nor+nand    */
    SPI_FLASH_CMD_QREAD,    /*!<  fast read quad output, nor+nand    */
    SPI_FLASH_CMD_2READ,    /*!<  2 line read, nor+nand    */
    SPI_FLASH_CMD_4READ,   /*!<  4 line read, nor+nand .   ==== 10    */
    SPI_FLASH_CMD_RDID,    /*!<  read id, nor+nand    */
    SPI_FLASH_CMD_PLD,     /*!<  load program data, nand    */
    SPI_FLASH_CMD_QPLD,    /*!<  qual program load, nand    */
    SPI_FLASH_CMD_PLDR,    /*!<  randome program load, nand    */
    SPI_FLASH_CMD_QPLDR,   /*!<  qual random program load, nand    */
    SPI_FLASH_CMD_PEXE,    /*!<  program execute, nand    */
    SPI_FLASH_CMD_BE,      /*!<  block erase, nand    */
    SPI_FLASH_CMD_RST,     /*!<  reset, nor+nand    */
    SPI_FLASH_CMD_RST_EN,     /*!<  reset en, nor    */
    SPI_FLASH_CMD_RDSR2,   /*!<  read status register 2, nor       ==== 20    */
    SPI_FLASH_CMD_WVSR,    /*!<  write volatile status register, nor    */
    SPI_FLASH_CMD_PP,      /*!<  PAGE PROGRAM, nor    */
    SPI_FLASH_CMD_QPP,     /*!<  QUAL PAGE PROGRAM, nor    */
    SPI_FLASH_CMD_RDEAR,     /*!<  read extended address register, nor    */
    SPI_FLASH_CMD_WREAR,     /*!<  write extended address register, nor    */
    SPI_FLASH_CMD_PE,        /*!<  page erase, nor    */
    SPI_FLASH_CMD_SE,        /*!<  SECTOR erase, nor    */
    SPI_FLASH_CMD_BE32,        /*!<  BLOCK erase 32KB, nor    */
    SPI_FLASH_CMD_BE64,        /*!<  BLOCK erase 64KB, nor    */
    SPI_FLASH_CMD_CE,        /*!<  CHIP ERASE, nor             ===== 30    */
    SPI_FLASH_CMD_RDSR3,   /*!<  read status register 3, nor    */
    SPI_FLASH_CMD_WRSR3,   /*!<  WRITE status register 3, nor    */
    SPI_FLASH_CMD_EN4BM,   /*!<  enter 4-byte address mode, nor    */
    SPI_FLASH_CMD_ET4BM,   /*!<  exit 4-byte address mode, nor    */
    SPI_FLASH_CMD_RD4BA,   /*!<  read with 4-byte address, nor    */
    SPI_FLASH_CMD_FR4BA, /*!<  fast read with 4-byte address, nor    */
    SPI_FLASH_CMD_FQR4BA, /*!<  fast read quad output with 4-byte address, nor    */
    SPI_FLASH_CMD_4RD4BA, /*!<  4 IO read with 4-byte address, nor    */
    SPI_FLASH_CMD_PP4BA, /*!<  page program with 4-byte address, nor    */
    SPI_FLASH_CMD_QPP4BA, /*!<  quad page program with 4-byte address, nor     ==== 40    */
    SPI_FLASH_CMD_SE4BA, /*!<  sector erase with 4-byte address, nor    */
    SPI_FLASH_CMD_BE4BA, /*!<  64KB block erase with 4-byte address, nor    */
    SPI_FLASH_CMD_WRSR2, /*!<  write status register command 2, nor    */
    SPI_FLASH_CMD_LEFPA, /*!< Last ECC Failue Page Address, NAND    */
    SPI_FLASH_CMD_BBM, /*!< Bad Block Management, NAND    */
    SPI_FLASH_CMD_RBLUT, /*!< Read BBM Look Up Table, NAND    */
    SPI_FLASH_CMD_COUNT /*!< current support flash command     */
} SPI_FLASH_CMD_E;

/**
  * @brief  SPI_FLASH manual command
  */
typedef struct
{
    uint8_t cmd;
    uint8_t func_mode;   /*!<   manual read 0 / write 1  */
    uint8_t data_mode;   /*!<   0 no data / 1 single line / 2 dual line / 3 quad line  */
    uint8_t dummy_cycle;     /*!<   dummy cycle between command and address/data  */
    uint8_t ab_size;          /*!<   alternate byte size, */
    uint8_t ab_mode;          /*!<   alternate byte mode, 0 no, 1 single line, 2 dual line, 3 four-line */
    uint8_t addr_size;   /*!<   address byte count - 1 */
    uint8_t addr_mode;   /*!<   0 no, 1 single line / 2 dual line / 3 four line */
    uint8_t cmd_mode;    /*!<   0 no, 1 single line / 2 dual line / 3 four line */
} FLASH_CMD_CFG_T;