Posted: Sun Jun 24, 2012 22:44 Post subject: It is there for users of TIAO & USB JTAG ZJTAG / E4200
Hi all,
I made some weeks ago tests with several firmware compatible router "Linksys E4200", and making with that of "Tomato USB", it has totally missed the flashing.
So I try to solve this problem by passing a "JTAG COM", and after use the flash of "CFE", it did even more damage, and since then the LED logo "CISCO" does flashes even more, and even ports "RJ45" more boots (He does not blink when the ignition of the router).
I must now try to re-flash the "CFE" I already get a file "bin" for the "CFE" on this forum, but the real problem now is that either "TIAO USB JTAG" or is "ZJTAG" does not do this type of router.
http://www.dd-wrt.com/phpBB2/viewtopic.php?p=622044#622044
In order, I'm connected like this :
Code:
Use a flex female to female to connect nTRST together (PIN 1 on Router to PIN 3 on TUMPA's 20 PIN JTAG Header
Use a flex female to female to connect TDI together (PIN 3 on Router to PIN 5 on TUMPA's 20 PIN JTAG Header
Use a flex female to female to connect TCK together (PIN 9 on Router to PIN 9 on TUMPA's 20 PIN JTAG Header
Use a flex female to female to connect TMS together (PIN 7 on Router to PIN 7 on TUMPA's 20 PIN JTAG Header
Use a flex female to female to connect TDO together (PIN 5 on Router to PIN 13 on TUMPA's 20 PIN JTAG Header
Use a flex female to female to connect GND together (PIN 4 on Router to PIN 4 on TUMPA's 20 PIN JTAG Header
I added this in zjtag.c (line 289) and then compile :
USB TAP device has been initialized. Please confirm VREF signal connected!
Press any key to continue... ONCE target board is powered on!
Probing bus ... Done
Detected IR Length is 1
CPU Chip ID: 11000111100001000111011111111111 (C78477FF)
CPU Manufature:Unknow(7FE)
CPU Device ID :7847
CPU Revision :12
*** Detected a CPU but not in build-in list ***
*** You can set /skipdetect let operate continue ***
And if I re-start it takes me out every time another value, I would think that randomly generates values, even with the version "0.4" original "ZJTAG".
Here is a link with all the information for this router :
http://infodepot.wikia.com/wiki/Linksys_E4200_v1.0#Specs
An idea of the problem ?
EDIT :
Apparently "ZJTAG" is not even compatible with the flash chip, and only "TJTAG" can do.
I hope I have not bought anything for this programmer "JTAG".
Hi all,
I made good progress through the purchase of a single cable "dlc5".
However I doubt that the problem mentioned in my first post from a crash of "CFE" because after doing a backup, the content is almost equal to the one I found on this forum.
http://www.dd-wrt.com/phpBB2/viewtopic.php?p=622044#622044
To refocus my problem.
Since the update "TomatoUSB", my router "Linksys E4200" no longer works, even the network ports LEDs do not flash when the ignition to warn that they have been initialized, except I think c is the chipset that does this, not the "CFE" ?
The logo "CISCO" also remains fixed, then that should be flashing at the time of ignition "electric".
I of course tried a connection through the port "COM3" to access the interface "CFE", but nothing.
I even tried to re-flash the "CFE" with this backup, but nothing n'à change, and worse, "tjtag" remains blocked at this stage :
Detected IR chain length = 32
Number of device(s) = 1
IDCODE for device 1 is 0x1471617F
Idcode 0x1471617f IR Length 32
Jtag is in LV mode
switching to MIPS mode 1
Probing bus ... Done
Instruction Length set to 5
CPU Chip ID: 00000000000010001100000101111111 (0008C17F)
*** Found a Broadcom BCM4716 Rev 1 CPU in MIPS MODE chip ***
- EJTAG IMPCODE ....... : 01100000010000010100000000000000 (60414000)
- EJTAG Version ....... : 3.1
- EJTAG DMA Support ... : No
- EJTAG Implementation flags: R4k ASID_8 MIPS16 NoDMA MIPS32
Intial value of Control register is 000000CC
Intial value of status register is 0000007F
01111111 (0000007F)
Status bit 7 Busy Inverted pin 11 = 1
Status bit 6 *Ack pin 10 = 1
Status bit 5 Paper-out pin 12 = 1
Status bit 4 Select pin 13 = 1
Status bit 3 *Error pin 15 = 1
* means low = true, e.g., *Error
VCC connected
values of Control register after init 0x000000CC
value of status register after init 0x0000007F
system reset complete