c56kevin 发表于 2010-4-4 00:46:34

求救，rg100a-aa M29W128GH 刷CFE 电源灯不亮

昨天刷了一下
https://www.chinadsl.net/viewthread.php?tid=38591&highlight=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：
===============================================
Broadcom EJTAG Debrick Utility v1.8b-hugebird
===============================================

Probing bus ... Done

Instruction Length set to 5

CPU running under BIG endian

CPU Chip ID: 00000110001101011000000101111111 (0635817F)
*** Found a Broadcom BCM6358 Rev 1 CPU chip ***

    - EJTAG IMPCODE ....... : 00000000100000011000100100000100 (00818904)
    - EJTAG Version ....... : 1 or 2.0
    - EJTAG DMA Support ... : Yes
    - EJTAG Implementation flags: R4k MIPS16 MIPS32

Issuing Processor / Peripheral Reset ... Done
Enabling Memory Writes ... Done
Halting Processor ... <Processor did NOT enter Debug Mode!> ... Done
Clearing Watchdog ... Done
Loading CPU Configuration Code ... Skipped
Detecting Flash Base Address...
Read MPI register value : 48454c4f
MPI register show Flash Access Base Addr : 08454c00

Probing Flash at Address: 0x08454C00 ...
DMA Read(h) Addr = 08454c00Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c02Data = (00000000)ERROR ON READ
Detected Chip ID (VenID:DevID = 00FF : FFFF)
DMA Read(h) Addr = 08454c20Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c22Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c24Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c20Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c22Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c24Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c20Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c22Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c24Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c20Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c22Data = (00000000)ERROR ON READ
DMA Read(h) Addr = 08454c24Data = (00000000)ERROR ON READ
*** Unknown or NO Flash Chip Detected ***


*** REQUESTED OPERATION IS COMPLETE ***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 发表于 2010-4-4 10:48:09

没事别耍cfe~
要不就只有满茶几的杯具了！

c56kevin 发表于 2010-4-4 12:01:20

是茶几了，可是咋整呢，

c56kevin 发表于 2010-4-6 09:56:52

本帖最后由 c56kevin 于 2010-4-6 10:03 编辑

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 发表于 2010-4-8 14:43:31

“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 发表于 2010-4-8 15:02:15

是的，我是用小剪刀短接的， 先把上面的漆刮破一点。

bg8erw 发表于 2013-1-16 14:27:43

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
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