zJTAG CPU Chip ID: 00100000001010111111000101111111 (0x202BF17F)

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zJTAG CPU Chip ID: 00100000001010111111000101111111 (0x202BF17F)

raito88

Hi!
I am trying to recover NVRAM on my Linksys EA6200
but looks like zJTAG not suporting this CPU

==============================================
zJTAG EJTAG Debrick Utility v1.8 RC3
==============================================
Dev 0:
Flags=0x2
Type=0x6
ID=0x4038a98
LocId=0x2111
SerialNumber=TI88NL5A
Description=TIAO USB Multi-Protocol Adapter A
ftHandle=0x0
Set I/O speed to 7500 KHz
USB TAP device has been initialized. Please confirm VREF signal connected!
Press any key to continue... ONCE target board is powered on!
Detected IR chain length = 5
There are 0 device(s) in the JTAG chain
Probing bus ... Done
CPU Chip ID: 00100000001010111111000101111111 (0x202BF17F)
CPU Manufacturer :Broadcom(ID=0x17E)
CPU Device ID :02BF
CPU Revision :2
*** Detected a CPU but not in build-in list ***
*** You can set /skipdetect let operate continue ***
PLEASE HELP!

[deleted]

OpenOCD team member Paul Fertser has TUMPA and TUMPA-lite test/development units. I think you could use his help.
Could you please try FreeNode IRC server, #openocd channel. irc://chat.freenode.net/openocd
You can Connect now using Freenode webchat, no IRC client needed.
Alternatively you can e-mail him. His e-mail address is fercerpav (at) gmail.com
Please post feedback here if you solve your problem, for other users to benefit.

raito88

And when i try clock speed 30000 KHz i get diferen CPU:

        ==============================================
               zJTAG EJTAG Debrick Utility v1.8 RC3
        ==============================================
Dev 0:
 Flags=0x2
 Type=0x6
 ID=0x4038a98
 LocId=0x2111
 SerialNumber=TI88NL5A
 Description=TIAO USB Multi-Protocol Adapter A
 ftHandle=0x0
 Set I/O speed to 30000 KHz
USB TAP device has been initialized. Please confirm VREF signal connected!
Press any key to continue... ONCE target board is powered on!
Detected IR chain length = 6
There are 0 device(s) in the JTAG chain
Probing bus ... Done
CPU Chip ID: 01000000010101111110001111111111 (0x4057E3FF)
    CPU Manufacturer :Unknown(ID=0x3FE)
    CPU Device ID :057E
    CPU Revision  :4
*** Detected a CPU but not in build-in list ***
*** You can set /skipdetect let operate continue ***

And on clock speed 7500 KHz:

        ==============================================
               zJTAG EJTAG Debrick Utility v1.8 RC3
        ==============================================
Dev 0:
 Flags=0x2
 Type=0x6
 ID=0x4038a98
 LocId=0x2111
 SerialNumber=TI88NL5A
 Description=TIAO USB Multi-Protocol Adapter A
 ftHandle=0x0
 Set I/O speed to 7500 KHz
USB TAP device has been initialized. Please confirm VREF signal connected!
Press any key to continue... ONCE target board is powered on!
Detected IR chain length = 5
There are 0 device(s) in the JTAG chain
Probing bus ... Done
CPU Chip ID: 00100000001010111111000101111111 (0x202BF17F)
    CPU Manufacturer :Broadcom(ID=0x17E)
    CPU Device ID :02BF
    CPU Revision  :2
*** Detected a CPU but not in build-in list ***
*** You can set /skipdetect let operate continue ***

[deleted]

zJTAG does not support your chips. You need to use OpenOCD...
Freddie Chopin has kindly provided windows binaries on his website:
http://www.freddiechopin.info/ > Download > Software > OpenOCD, see http://www.freddiechopin.info/en/articles/34-news/92-openocd-w-wersji-080 for details.
Good luck, and happy hacking!

raito88

Now i start use OpenOCD
Code:

Open On-Chip Debugger 0.9.0 (2015-08-15-12:41)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
Info : only one transport option; autoselect 'jtag'
adapter speed: 7500 kHz
Warn : Using DEPRECATED interface driver 'ft2232'
Info : Consider using the 'ftdi' interface driver, with configuration files in interface/ftdi/...
Info : device: 6 "2232H"
Info : deviceID: 67340952
Info : SerialNumber: TI88NL5A
Info : Description: TIAO USB Multi-Protocol Adapter A
Info : max TCK change to: 30000 kHz
Info : clock speed 7500 kHz
Warn : There are no enabled taps.  AUTO PROBING MIGHT NOT WORK!!
Info : JTAG tap: auto0.tap tap/device found: 0x202bf17f (mfg: 0x0bf, part: 0x02bf, ver: 0x2)
Warn : AUTO auto0.tap - use "jtag newtap auto0 tap -irlen 3 -expected-id 0x202bf17f"
Warn : gdb services need one or more targets defined

In #OpenOCD irc <indy> give me this two lines, but i donk know where i need put them ....

jtag newtap bcm47081a0 tap -irlen 3 -expected-id 0x202bf17f
target create bcm47081a0.tap cortex_a -chain-position bcm47081a0.tap -coreid 0

[deleted]

http://openocd.org/doc/
http://openocd.org/discussion/