dfs_mkfs() 调用format error

发布于 2021-02-28 21:55:46 浏览：1402 订阅该版

背景：
外挂SPI flash，W25Q256，SFUD/FAL都没啥问题，具体见启动打印：
```
 \ | /
- RT -     Thread Operating System
 / | \     3.1.4 build Feb 28 2021
 2006 - 2019 Copyright by rt-thread team
rt_hw_spi_device_attach succ! 
[SFUD] Find a Winbond flash chip. Size is 33554432 bytes.
[SFUD] W25Q256 flash device is initialize success.
[D/FAL] (fal_flash_init:61) Flash device |                  W25Q256 | addr: 0x00000000 | len: 0x02000000 | blk_size: 0x00001000 |initialized finish.
[21:32:45.476] [32;22m[I/FAL] ==================== FAL partition table ====================[0m
[32;22m[I/FAL] | name      | flash_dev |   offset   |    length  |[0m
[32;22m[I/FAL] -------------------------------------------------------------[0m
[32;22m[I/FAL] | easyflash | W25Q256   | 0x00000000 | 0x00200000 |[0m
[32;22m[I/FAL] | download  | W25Q256   | 0x00200000 | 0x02000000 |[0m
[32;22m[I/FAL] =============================================================[0m
[32;22m[I/FAL] RT-Thread Flash Abstraction Layer (V0.5.0) initialize success.[0m
ROMFS File System initialized!
[32;22m[I/FAL] The FAL MTD NOR device (download) created successfully[0m
format error
mkfs  failed! 
msh />device           type         ref count
-------- -------------------- ----------
download MTD Device           0       
W25Q256  Block Device         0       
spi10    SPI Device           0       
spi1     SPI Bus              0       
uart3    Character Device     2       
pin      Miscellaneous Device 0

挂载DFS的时候先mkfs，发现在dfs_elm_mkfs()中调用f_mkfs()的时候出错了，返回（0x01 FR_DISK_ERR，A hard error occurred in the low level disk I/O layer）
```
操作代码如下：
```c
int rt_hw_spi_flash_init(void)
{
    int ret;
    __HAL_RCC_GPIOA_CLK_ENABLE();
    ret = rt_hw_spi_device_attach("spi1", "spi10", GPIOA, GPIO_PIN_4);
    if (ret != RT_EOK)
    {
	rt_kprintf("rt_hw_spi_device_attach failed! \n");
	 return ret;
    }
    else
    {
	rt_kprintf("rt_hw_spi_device_attach succ! \n");
    }

if (RT_NULL == rt_sfud_flash_probe("W25Q256", "spi10"))
    {
	 rt_kprintf("rt_sfud_flash_probe failed! \n");
        return -RT_ERROR;
    }
		
    fal_init();
		
    return RT_EOK;
}

int mount_init(void)
{
    struct rt_device *flash_dev = RT_NULL;
	
    /* mount ROMFS as root directory */
    if (dfs_mount(RT_NULL, "/", "rom", 0, (const void *)DFS_ROMFS_ROOT) == 0)
    {
        rt_kprintf("ROMFS File System initialized!\n");
    }
    else
    {
        rt_kprintf("ROMFS File System initialized Failed!\n");
    }

flash_dev = fal_mtd_nor_device_create("download");
    if (flash_dev)
    {
	// mkfs firstly
	if (dfs_mkfs("elm", "download") != 0)
	{
	   rt_kprintf("mkfs  failed! \n");
	   return 1;
	}
			
        //mount filesystem
        if (dfs_mount("download", "/flash", "elm", 0, 0) != 0)
        {
            rt_kprintf("mount to '/flash' failed! \n");
	    return 1;
        }
        else
        {
            rt_kprintf("mount to '/flash' success! \n");
        }
    }
    else
    {
        rt_kprintf("Can't create  block device \n");
    }
    return RT_EOK;
}
INIT_APP_EXPORT(mount_init);
```
问题：
因为f_mkfs的具体实现没找到，如果如描述的`low level disk I/O layer error`的话，为什么FAL启动的时候不提示错误？设备的r/w等函数都是`SFUD/FAL`自带的，不大可能唯独我的代码出错啊~

whj467467222 认证专家 2021-03-01

开源，分享，交流，共同进步

看样子你是想对 FLASH 进行分区，然后挂载文件系统。
这个代码在 **ART-Pi** 的 SDK 拷贝出来的，验证通过的，你可以自己去下载一份看看其他的配置。

参考一下这个的实现吧.

```c
/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author        Notes
 * 2018-12-13     balanceTWK    add sdcard port file
 * 2019-06-11     WillianChan   Add SD card hot plug detection
 */

#include <rtthread.h>

#ifdef BSP_USING_FS
#if DFS_FILESYSTEMS_MAX < 4
#error "Please define DFS_FILESYSTEMS_MAX more than 4"
#endif
#if DFS_FILESYSTEM_TYPES_MAX < 4
#error "Please define DFS_FILESYSTEM_TYPES_MAX more than 4"
#endif

#ifdef BSP_USING_SPI_FLASH_FS
#include "fal.h"
#endif

#include <dfs_fs.h>
#include "dfs_romfs.h"
#include "drv_sdio.h"

#define DBG_TAG "app.filesystem"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>

static const struct romfs_dirent _romfs_root[] = {
    {ROMFS_DIRENT_DIR, "flash", RT_NULL, 0},
    {ROMFS_DIRENT_DIR, "sdcard", RT_NULL, 0}};

const struct romfs_dirent romfs_root = {
    ROMFS_DIRENT_DIR, "/", (rt_uint8_t *)_romfs_root, sizeof(_romfs_root) / sizeof(_romfs_root[0])};

#ifdef BSP_USING_SDCARD_FS

/* SD Card hot plug detection pin */
#define SD_CHECK_PIN GET_PIN(D, 5)

static void _sdcard_mount(void)
{
    rt_device_t device;

device = rt_device_find("sd0");
    if (device == NULL)
    {
        mmcsd_wait_cd_changed(0);
        sdcard_change();
        mmcsd_wait_cd_changed(RT_WAITING_FOREVER);
        device = rt_device_find("sd0");
    }
    if (device != RT_NULL)
    {
        if (dfs_mount("sd0", "/sdcard", "elm", 0, 0) == RT_EOK)
        {
            LOG_I("sd card mount to '/sdcard'");
        }
        else
        {
            LOG_W("sd card mount to '/sdcard' failed!");
        }
    }
}

static void _sdcard_unmount(void)
{
    rt_thread_mdelay(200);
    dfs_unmount("/sdcard");
    LOG_I("Unmount \"/sdcard\"");

mmcsd_wait_cd_changed(0);
    sdcard_change();
    mmcsd_wait_cd_changed(RT_WAITING_FOREVER);
}

static void sd_mount(void *parameter)
{
    rt_uint8_t re_sd_check_pin = 1;
    rt_thread_mdelay(200);
    if (rt_pin_read(SD_CHECK_PIN))
    {
        _sdcard_mount();
    }
    while (1)
    {
        rt_thread_mdelay(200);
        if (!re_sd_check_pin && (re_sd_check_pin = rt_pin_read(SD_CHECK_PIN)) != 0)
        {
            _sdcard_mount();
        }

if (re_sd_check_pin && (re_sd_check_pin = rt_pin_read(SD_CHECK_PIN)) == 0)
        {
            _sdcard_unmount();
        }
    }
}

#endif /* BSP_USING_SDCARD_FS */

int mount_init(void)
{
    if (dfs_mount(RT_NULL, "/", "rom", 0, &(romfs_root)) != 0)
    {
        LOG_E("rom mount to '/' failed!");
    }
#ifdef BSP_USING_SPI_FLASH_FS
    struct rt_device *flash_dev = RT_NULL;

#ifndef RT_USING_WIFI
    fal_init();
#endif

flash_dev = fal_mtd_nor_device_create("filesystem");

if (flash_dev)
    {
        //mount filesystem
        if (dfs_mount(flash_dev->parent.name, "/flash", "lfs", 0, 0) != 0)
        {
            LOG_W("mount to '/flash' failed! try to mkfs %s", flash_dev->parent.name);
            dfs_mkfs("lfs", flash_dev->parent.name);
            if (dfs_mount(flash_dev->parent.name, "/flash", "lfs", 0, 0) == 0)
            {
                LOG_I("mount to '/flash' success!");
            }
        }
        else
        {
            LOG_I("mount to '/flash' success!");
        }
    }
    else
    {
        LOG_E("Can't create  block device  filesystem or bt_image partition.");
    }

#endif

#ifdef BSP_USING_SDCARD_FS
    rt_thread_t tid;

rt_pin_mode(SD_CHECK_PIN, PIN_MODE_INPUT_PULLUP);

tid = rt_thread_create("sd_mount", sd_mount, RT_NULL,
                           2048, RT_THREAD_PRIORITY_MAX - 2, 20);
    if (tid != RT_NULL)
    {
        rt_thread_startup(tid);
    }
    else
    {
        LOG_E("create sd_mount thread err!");
    }
#endif
    return RT_EOK;
}
INIT_APP_EXPORT(mount_init);

#endif /* BSP_USING_FS */

```

Juggernaut 2021-03-01

①②③

感谢回复！
按照你的建议改了代码，如下：
```c
int mount_init(void)
{
	  struct rt_device *flash_dev = RT_NULL;
	
    /* mount ROMFS as root directory */
    if (dfs_mount(RT_NULL, "/", "rom", 0, &(romfs_root)) == 0 )
    {
        rt_kprintf("ROMFS File System initialized!\n");
    }
    else
    {
        rt_kprintf("ROMFS File System initialized Failed!\n");
    }

flash_dev = fal_mtd_nor_device_create("download");
    if (flash_dev)
    {
        //mount filesystem
        if (dfs_mount(flash_dev->parent.name, "/flash", "elm", 0, 0) != 0)
        {
            rt_kprintf("mount to '/flash' failed! \n");
					  dfs_mkfs("elm", flash_dev->parent.name);
            if (dfs_mount(flash_dev->parent.name, "/flash", "elm", 0, 0) == 0)
            {
                rt_kprintf("mount to '/flash' success!");
            }
	    else
	    {
		rt_kprintf("mount to '/flash' failed! \n");
		return RT_EOK;
	    }
        }
        else
        {
            rt_kprintf("mount to '/flash' success! \n");
        }
    }
    else
    {
        rt_kprintf("Can't create  block device filesystem or bt_image partition. \n");
    }

return RT_EOK;
}
INIT_APP_EXPORT(mount_init);
```

打印的log如下：
```
[32;22m[I/FAL] RT-Thread Flash Abstraction Layer (V0.5.0) initialize success.[0m
ROMFS File System initialized!
[32;22m[I/FAL] The FAL MTD NOR device (download) created successfully[0m
[31m[328] E/DFS: There is no space to mount this file system (elm).
[0mmount to '/flash' failed! 
format error
[31m[339] E/DFS: There is no space to mount this file system (elm).
[0mmount to '/flash' failed!
```

whj467467222 2021-03-02

开源，分享，交流，共同进步

Juggernaut 2021-03-08

①②③

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追加回复

2 个回答

Juggernaut 2021-02-28

①②③

跟进`f_mkfs()`，`stat = disk_initialize(pdrv);`这个返回0是正常，第一次调用`disk_ioctl()`返回的时候`sz_blk`的值为1，第2次调用`disk_ioctl()`返回的时候ss的值为0；
```c
	/* Check physical drive status */
	stat = disk_initialize(pdrv);
	if (stat & STA_NOINIT) return FR_NOT_READY;
	if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
	if (disk_ioctl(pdrv, GET_BLOCK_SIZE, &sz_blk) != RES_OK || !sz_blk || sz_blk > 32768 || (sz_blk & (sz_blk - 1))) sz_blk = 1;	/* Erase block to align data area */
#if _MAX_SS != _MIN_SS		/* Get sector size of the medium */
	if (disk_ioctl(pdrv, GET_SECTOR_SIZE, &ss) != RES_OK) return FR_DISK_ERR;
	if (ss > _MAX_SS || ss < _MIN_SS || (ss & (ss - 1))) return FR_DISK_ERR;
```
跟进去看了下，在`disk_ioctl()`函数执行如下代码的时候`geometry`没有拿到数据~
SFUD/FAL的大神能否帮忙看看
```c
    else if (ctrl == GET_SECTOR_SIZE)
    {
        struct rt_device_blk_geometry geometry;

rt_memset(&geometry, 0, sizeof(geometry));
        rt_device_control(device, RT_DEVICE_CTRL_BLK_GETGEOME, &geometry);

*(WORD *)buff = (WORD)(geometry.bytes_per_sector);
    }
```

Juggernaut 2021-03-01

①②③

再来个SFUD加debug的log，明明init的时候正常的啊

```
> 
 \ | /
- RT -     Thread Operating System
 / | \     3.1.4 build Mar  1 2021
 2006 - 2019 Copyright by rt-thread team
rt_hw_spi_device_attach succ! 
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud.c:861) The flash device manufacturer ID is 0xEF, memory type ID is 0x40, capacity ID is 0x19.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:131) Check SFDP header is OK. The reversion is V1.0, NPN is 0.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:173) Check JEDEC basic flash parameter header is OK. The table id is 0, reversion is V1.0, length is 9, parameter table pointer is *[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:203) JEDEC basic flash parameter table info:
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:204) MSB-LSB  3    2    1    0
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:206) [0001] 0xFF 0xF3 0x20 0xE5
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:206) [0002] 0x0F 0xFF 0xFF 0xFF
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:206) [0003] 0x6B 0x08 0xEB 0x44
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:206) [0004] 0xBB 0x42 0x3B 0x08
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:206) [0005] 0xFF 0xFF 0xFF 0xFE
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:206) [0006] 0x00 0x00 0xFF 0xFF
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:206) [0007] 0xEB 0x21 0xFF 0xFF
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:206) [0008] 0x52 0x0F 0x20 0x0C
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:206) [0009] 0x00 0x00 0xD8 0x10
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:215) 4 KB Erase is supported throughout the device. Command is 0x20.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:234) Write granularity is 64 bytes or larger.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:245) Target flash status register is non-volatile.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:276) 3- or 4-Byte addressing.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:305) Capacity is 33554432 Bytes.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:311) Flash device supports 4KB block erase. Command is 0x20.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:311) Flash device supports 32KB block erase. Command is 0x52.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud_sfdp.c:311) Flash device supports 64KB block erase. Command is 0xD8.
[SFUD] Find a Winbond flash chip. Size is 33554432 bytes.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud.c:840) Flash device reset success.
[SFUD] (..\..\..\components\drivers\spi\sfud\src\sfud.c:941) Enter 4-Byte addressing mode success.
[SFUD] W25Q256 flash device is initialize success.
[SFUD] Probe SPI flash W25Q256 by SPI device spi10 success.
[D/FAL] (fal_flash_init:61) Flash device |                  W25Q256 | addr: 0x00000000 | len: 0x02000000 | blk_size: 0x00001000 |initialized finish.
[32;22m[I/FAL] ==================== FAL partition table ====================[0m
[32;22m[I/FAL] | name      | flash_dev |   offset   |    length  |[0m
[32;22m[I/FAL] -------------------------------------------------------------[0m
[32;22m[I/FAL] | easyflash | W25Q256   | 0x00000000 | 0x00200000 |[0m
[32;22m[I/FAL] | download  | W25Q256   | 0x00200000 | 0x02000000 |[0m
[32;22m[I/FAL] =============================================================[0m
[32;22m[I/FAL] RT-Thread Flash Abstraction Layer (V0.5.0) initialize success.[0m
ROMFS File System initialized!
[32;22m[I/FAL] The FAL MTD NOR device (download) created successfully[0m
format error
mkfs  failed! 
msh />device           type         ref count
-------- -------------------- ----------
download MTD Device           0       
W25Q256  Block Device         0       
spi10    SPI Device           0       
spi1     SPI Bus              0       
uart3    Character Device     2       
pin      Miscellaneous Device 0
```