MPC8309 JTAG initialization failure

[sreeharicp]

Hi all,

       I have designed my custom board with MPC8309. I have selected boot from NOR  flash i.e., RESET_CONFIG_SOURCE  = "0000". I am trying to program uboot bin file using USB code warrior tool. But, it is showing initialization failure.What could be the reason?

When discussed with NXP forum, they suggested to select RESET_CONFIG_SOURCE [0:3] is ="1000" and program uboot bin file at the location 0xFE000000.Then fix the RESET_CONFIG_SOURCE [0:3] ="0000". With this USB code warrior tool detects the board and we are able to program the uboot and its working fine.

Is their any option which avoids this switching from RESET_CONFIG_SOURCE [0:3] = 1000 to RESET_CONFIG_SOURCE [0:3] =0000?

[alexander_yakov]

MPC83xx family supports reset configuration override function. To do that, please open USB TAP properties:

Edit - Preferences - Remote Connections - CodeWarrior USB TAP - Change

A new page with USB TAP properties will be opened, at this page please enable checkbox "Use JTAG Configuration file", click "Chose" button below and pick JTAG chain file from the following folder:

"C:\Program Files (x86)\Freescale\CodeWarrior PA V8.8\PowerPC_EABI_Support\Initialization_Files\jtag_chains\"

As far as I can see, there is only one file for MPC8309 - 8309SOM_HRCW_jtag.txt for "SOM" board.

Please look file contents to check if HRCW value is suitable for your case. If not than please create a new file using this file as reference.

Have a great day,
Alexander
TIC

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[sreeharicp]

Dear alexander.yakovlev,

I have done what you have suggested still its not working. Please

find attached screen shots and Jtag cfg file and init file for your

reference.

Regards

sreehari

[alexander_yakov]

1. Please enable "verify memory writes" checkbox in "Target Configuration" (file 3.jpg)

2. At screenshot 5.jpg please press button for Details and submit the details

3. Please submit your JTAG/COP header connection schematic

[sreeharicp]

Dear Alexander.yakovlev,

Please find attachment of screen shots and JTAG schematic pdf file.

Regards

sreehari

[alexander_yakov]

Thank you.

Attached partial schematic does not show, how COP signals COP_HRESET and JTAG_TRST are connected to the processor.

[sreeharicp]

Dear alexander.yakovlev,

Please find attachment of full schematic, COP_HRESET is going to

cpld MaxV and PORESET also and based on these two signals we are

generating MPC_RESET to MPC8309(PORESET).

Regards

sreehari

[alexander_yakov]

Is it possible to temporary re-program your CPLD to route COP_HRESET to processor HRESET instead of PORESET?

The reset configuration override function does not work if COP_HRESET is routed to the processor PORESET

[sreeharicp]

Dear Alexander.Yakovlev,

I have modified in my CPLD logic COP_HRESET to processor HRESET

instead of PORESET still it is problem, Previously we are getting

initialization failure and after modification we are not getting

initialization failure but it is keep on showing initializing. Please

find attached screen shot.

Regards

sreehari