ARM based processor with TRACE32

Hi All,
I am using ARM based SoC, and using Lauterbach to bring it up.
I using u-boot as my boot loader, and I did DDR register settings for
800MHz DDR3 and I am able to load my u-boot code, and u-boot is booting
when I load using Lauterbach.

I can see the console messages and u-boot prompt. From there I would like
to flash the u-boot in FLASH memory using u-boot commands.


But the issue is, when the u-boot console messages are up, after some time,
say 3-5 min the JTAG communication fails and the Trace 32 status bar shows
the message "Emulation Debug Port Fail" message.

I have checked the DDR register settings, 
JTAG clock is reduced and checked. 
Selected the correct CPU core.

Could anyone suggest what are the other things can be checked?

(The same works for DDR part 667MHz. )
We change the DDR3 part and change the settings and the emulation fails in
this case after booting the u-boot from Lauterbach.

Thanks and Regards,
Jay

	   
					
---------------------------------------		
Posted through http://www.EmbeddedRelated.com

On Tuesday, 13 May 2014 13:37:20 UTC+2, yajforforum  wrote:
> Hi All,
> 
> I am using ARM based SoC, and using Lauterbach to bring it up.
> 
> I using u-boot as my boot loader, and I did DDR register settings for
> 
> 800MHz DDR3 and I am able to load my u-boot code, and u-boot is booting
> 
> when I load using Lauterbach.
> 
> 
> 
> I can see the console messages and u-boot prompt. From there I would like
> 
> to flash the u-boot in FLASH memory using u-boot commands.
> 
> 
> 
> 
> 
> But the issue is, when the u-boot console messages are up, after some time,
> 
> say 3-5 min the JTAG communication fails and the Trace 32 status bar shows
> 
> the message "Emulation Debug Port Fail" message.
> 
> 
> 
> I have checked the DDR register settings, 
> 
> JTAG clock is reduced and checked. 
> 
> Selected the correct CPU core.
> 
> 
> 
> Could anyone suggest what are the other things can be checked?
> 
> 
> 
> (The same works for DDR part 667MHz. )
> 
> We change the DDR3 part and change the settings and the emulation fails in
> 
> this case after booting the u-boot from Lauterbach.
> 
> 
> 
> Thanks and Regards,
> 
> Jay
> 
> 
> 
> 	   
> 
> 					
> 
> ---------------------------------------		
> 
> Posted through http://www.EmbeddedRelated.com

Watchdog?

Steven