10 qboot 修改fal_cfg,h中的FAL_FLASH_DEV_TABLE 后跳转失败

发布于 2023-04-11 11:18:21 浏览：938 订阅该版

1. 因为MCU FLASH有限，在移植了qboot后，发现没有足够的ROM空间放置download factory区 ，因板子上有TF卡，所以想在把两个partition放置TF中 ，按照@红枫大佬的文档移植 测试qboot功能正常后 我做了如下修改：

- fal_cfg. 文件

```c
extern const struct fal_flash_dev tf_download_file;

/* flash device table */
#define FAL_FLASH_DEV_TABLE                                          \
{                                                                    \
    &stm32_onchip_flash_16k,                                         \
    &stm32_onchip_flash_64k,                                         \
    &stm32_onchip_flash_128k,                                        \
    &tf_download_file,                                               \
}
```
- 仿照drv_flash_f4.c写了download partition部分的驱动代码

```c

#define DOWNLOARD_BIN_SIZE_MAX  (7 * 128 * 1024)
#define DOWNLOARD_BIN_START_ADRESS   (0)

static int fal_flash_read_download_bin(long offset, rt_uint8_t *buf, size_t size);
static int fal_flash_write_download_bin(long offset, const rt_uint8_t *buf, size_t size);
static int fal_flash_erase_download_bin(long offset, size_t size);
static int fatfs_Init(void);

const struct fal_flash_dev tf_download_file = { "tf_download_file", DOWNLOARD_BIN_START_ADRESS, DOWNLOARD_BIN_SIZE_MAX, (128 * 1024), {fatfs_Init, fal_flash_read_download_bin, fal_flash_write_download_bin, fal_flash_erase_download_bin} };
static int g_file_fd = -1;

int file_download_read(rt_uint32_t addr, rt_uint8_t *buf, size_t size)
{
   // size_t i;

if ((addr + size) > DOWNLOARD_BIN_SIZE_MAX)
    {
        LOG_E("read outrange flash size! addr is (0x%p)", (void*)(addr + size));
        return -1;
    }

g_file_fd = open("/download.bin", O_RDONLY| O_CREAT);

lseek(g_file_fd,(addr),SEEK_SET);

if (g_file_fd > 0) {

read(g_file_fd, buf, size);
    }
    close(g_file_fd);

return size;
}

static int fal_flash_read_download_bin(long offset, rt_uint8_t *buf, size_t size)
{
    return file_download_read(tf_download_file.addr + offset, buf, size);
}

int file_download_write(rt_uint32_t addr, const rt_uint8_t *buf, size_t size)
{
    //size_t i;

if ((addr + size) > DOWNLOARD_BIN_SIZE_MAX)
    {
        LOG_E("read outrange flash size! addr is (0x%p)", (void*)(addr + size));
        return -1;
    }

g_file_fd = open("/download.bin", O_WRONLY| O_CREAT);

lseek(g_file_fd,(addr),SEEK_SET);

if (g_file_fd > 0) {

write(g_file_fd, buf, size);
    }
    close(g_file_fd);
    return size;
}

static int fal_flash_write_download_bin(long offset, const rt_uint8_t *buf, size_t size)
{
    return file_download_write(tf_download_file.addr + offset, buf, size);
}

int file_download_erase(rt_uint32_t addr,  size_t size)
{
    size_t i;
    uint8_t erase_buf[512] ;

i=(addr + size);
    if ((addr + size) > DOWNLOARD_BIN_SIZE_MAX)
    {
        LOG_E("read outrange flash size! addr is (0x%p)", (void*)(addr + size));
        return -1;
    }

g_file_fd = open("/download.bin", O_WRONLY| O_CREAT);

lseek(g_file_fd,i,SEEK_SET);

memset(erase_buf,0xff,512);

if (g_file_fd > 0) {

for (int var = 0; var < size/512; ++var) {
            write(g_file_fd, erase_buf, 512);
            i+=512;
            lseek(g_file_fd,i,SEEK_SET);
        }
        write(g_file_fd, erase_buf, size%512);
    }
    close(g_file_fd);
    return size;
}

static int fal_flash_erase_download_bin(long offset, size_t size)
{
    return file_download_erase(tf_download_file.addr + offset, size);
}

static int fatfs_Init(void)
{

rt_thread_mdelay(1000);

if (dfs_mount("sd0", "/", "elm", 0, 0) == 0)
    {
        rt_kprintf(" dfs mount ok \r\n");
    }
    else
    {
        rt_kprintf(" dfs mount err \r\n");
    }
    return 0;
}
```
```c
- 然后运行发现 跳转失败 后测试发现 我只要 屏蔽FAL_FLASH_DEV_TABLE中我增加的 tf_download_file ，就能正常跳转，否则即便我全部使用片上FALSH也会跳转失败 ,我搜寻了 FAL_FLASH_DEV_TABLE，发现只在 fal_flash.c中文件使用了，并没有发现导致跳转失败的地方。请大佬帮忙分析一下原因