uboot对 eMMC 进行格式化分区命令以及擦除命令失败

龙哥多少

1. 问题背景
由于烧录了错误的uboot，导致系统无法启动，不能烧录系统。

2.尝试过的方法
尝试通过《4.4 开发板出厂前首次烧写》，通过TF卡启动 uboot 成功，但格式 eMMC 报错。

使用 sdfuse flashall 报错。

通过 fdisk -p 0，查看分区。分区信息异常，怀疑是 eMMC 写坏了吗？


3.附：
TF 卡进入 uboot，和格式化 eMMC 的log：

1. OK
   
2. 
   
3. U-Boot 2010.03 (Nov 03 2020 - 11:07:14) for iTOP-4412 Android
   
4. 
   
5.         APLL = 1000MHz, MPLL = 800MHz
   
6.         ARM_CLOCK = 1000MHz
   
7. PMIC:        S5M8767(VER5.0)
   
8. Board:        iTOP-4412
   
9. DRAM:         1 GB
   
10. MMC:   max_emmc_clock:40 MHZ
    
11. Set CLK to 400 KHz
    
12. EMMC CLOCK OUTPUT:: 400KHz -[div:50]
    
13. response timeout error : 00000104 cmd 8
    
14. response timeout error : 00000104 cmd 55
    
15. unrecognised EXT_CSD structure version 8
    
16. [ERROR]Card init fail,so Change mode and try again..!
    
17. [ERROR]go to inital  again..!
    
18. FAIL: waiting for status update.
    
19. [ERROR]Card init fail again..So give up mmc initial!
    
20. MMC0:        1024 MB
    
21. SD sclk_mmc is 400K HZ
    
22. SD sclk_mmc is 50000K HZ
    
23. SD sclk_mmc is 50000K HZ
    
24. MMC1:        7580 MB
    
25. *** Warning - using default environment
    
26. 
    
27. In:    serial
    
28. Out:   serial
    
29. Err:   serial
    
30. 
    
31. 
    
32. Checking Boot Mode ... SDMMC
    
33. SYSTEM ENTER NORMAL BOOT MODE
    
34. Hit any key to stop autoboot:  0
    
35. reading kernel.. 1120, 12288
    
36. MMC read: dev # 1, block # 1120, count 12288 ...12288 blocks read: OK
    
37. completed
    
38. reading RFS.. 13408, 2048
    
39. MMC read: dev # 1, block # 13408, count 2048 ...2048 blocks read: OK
    
40. completed
    
41. Wrong Image Format for bootm command
    
42. ERROR: can't get kernel image!
    
43. iTOP-4412 #
    
44. iTOP-4412 #
    
45. iTOP-4412 # fdisk -p 0      // 查看 eMMC的分区失败
    
46. FAIL: waiting for status update.
    
47. mmc read failed
    
48. FAIL: waiting for status update.
    
49. mmc read failed
    
50. FAIL: waiting for status update.
    
51. mmc read failed
    
52. FAIL: waiting for status update.
    
53. mmc read failed
    
54. 
    
55. partion #    size(MB)     block start #    block count    partition_Id
    
56. iTOP-4412 #
    
57. iTOP-4412 # fdisk -c 0  // 分区失败
    
58. .FAIL: waiting for status update.
    
59. mmc write failed
    
60. iTOP-4412 #
    
61. iTOP-4412 #
    
62. iTOP-4412 # fdisk -p 0
    
63. there are pending interrupts 0x10,11
    
64. FAIL: waiting for status update.
    
65. mmc read failed
    
66. there are pending interrupts 0x830,11
    
67. FAIL: waiting for status update.
    
68. mmc read failed
    
69. there are pending interrupts 0x20,11
    
70. FAIL: waiting for status update.
    
71. mmc read failed
    
72. FAIL: waiting for status update.
    
73. mmc read failed
    
74. 
    
75. partion #    size(MB)     block start #    block count    partition_Id
    
76.    3        -421789            65493        -863825919          0x00
    
77. iTOP-4412 #
    

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后续：重新下载 uboot 使用 TF 卡烧录成功。原因应该是自己编译的 uboot 读写 eMMC 异常导致。