求救，rg100a-aa M29W128GH 刷CFE 电源灯不亮

c56kevin

昨天刷了一下
https://www.chinadsl.net/viewthre ... hlight=rg100a%2B%2B 里的CFE，结果杯具了。

开机四个网线灯闪一下，就灭了，电源灯始终不亮。jtag 再看系统的时候报错，说是no chip found，如下：

1. 
   
2. ===============================================
   
3. Broadcom EJTAG Debrick Utility v1.8b-hugebird
   
4. ===============================================
   
5. 
   
6. Probing bus ... Done
   
7. 
   
8. Instruction Length set to 5
   
9. 
   
10. CPU running under BIG endian
    
11. 
    
12. CPU Chip ID: 00000110001101011000000101111111 (0635817F)
    
13. *** Found a Broadcom BCM6358 Rev 1 CPU chip ***
    
14. 
    
15.     - EJTAG IMPCODE ....... : 00000000100000011000100100000100 (00818904)
    
16.     - EJTAG Version ....... : 1 or 2.0
    
17.     - EJTAG DMA Support ... : Yes
    
18.     - EJTAG Implementation flags: R4k MIPS16 MIPS32
    
19. 
    
20. Issuing Processor / Peripheral Reset ... Done
    
21. Enabling Memory Writes ... Done
    
22. Halting Processor ... <Processor did NOT enter Debug Mode!> ... Done
    
23. Clearing Watchdog ... Done
    
24. Loading CPU Configuration Code ... Skipped
    
25. Detecting Flash Base Address...
    
26. Read MPI register value : 48454c4f
    
27. MPI register show Flash Access Base Addr : 08454c00
    
28. 
    
29. Probing Flash at Address: 0x08454C00 ...
    
30. DMA Read(h) Addr = 08454c00  Data = (00000000)ERROR ON READ
    
31. DMA Read(h) Addr = 08454c02  Data = (00000000)ERROR ON READ
    
32. Detected Chip ID (VenID:DevID = 00FF : FFFF)
    
33. DMA Read(h) Addr = 08454c20  Data = (00000000)ERROR ON READ
    
34. DMA Read(h) Addr = 08454c22  Data = (00000000)ERROR ON READ
    
35. DMA Read(h) Addr = 08454c24  Data = (00000000)ERROR ON READ
    
36. DMA Read(h) Addr = 08454c20  Data = (00000000)ERROR ON READ
    
37. DMA Read(h) Addr = 08454c22  Data = (00000000)ERROR ON READ
    
38. DMA Read(h) Addr = 08454c24  Data = (00000000)ERROR ON READ
    
39. DMA Read(h) Addr = 08454c20  Data = (00000000)ERROR ON READ
    
40. DMA Read(h) Addr = 08454c22  Data = (00000000)ERROR ON READ
    
41. DMA Read(h) Addr = 08454c24  Data = (00000000)ERROR ON READ
    
42. DMA Read(h) Addr = 08454c20  Data = (00000000)ERROR ON READ
    
43. DMA Read(h) Addr = 08454c22  Data = (00000000)ERROR ON READ
    
44. DMA Read(h) Addr = 08454c24  Data = (00000000)ERROR ON READ
    
45. *** Unknown or NO Flash Chip Detected ***
    
46. 
    
47. 
    
48. *** REQUESTED OPERATION IS COMPLETE ***

复制代码

老大们帮忙看看啊，是不是 Read MPI register value : 48454c4f
MPI register show Flash Access Base Addr : 08454c00  这两个有问题？

该怎么修复呢? 谢谢啊

yxhy1818

没事别耍cfe~
要不就只有满茶几的杯具了！

c56kevin

是茶几了，可是咋整呢，

c56kevin

在大家的帮助下，这个问题终于搞定啦。
解决方法，使Flash的OE#引脚短接，然后开机，三秒左右解除短接，运行brjtag清除Flash，然后刷入新的CFE。 这里我碰到一个问题，Flash清除后，还是偶尔会碰到Flash Unknown的问题，不过不要重新开机，多运行一下brjtag程序就没问题了。


修改了一下Hugebird老大的图片，看的清楚点吧。

kentyang1124

“使Flash的OE#引脚短接，然后开机，三秒左右解除短接”，短接是指随便选一个OE引脚和GND连接吗？

c56kevin

是的，我是用小剪刀短接的， 先把上面的漆刮破一点。

bg8erw

可以分享一下你用的CFE嘛？？？？？？？我的也是同样的问题。用LINJTAG刷了N次都不行