[U-Boot] UART loadb problem in u-boot

[U-Boot] UART loadb problem in u-boot

[prathika]

Hi all,

I am right now working on a board with PPC440EP processor.
I am loading the u-boot on to the board. the board has DDR SDRAM of CAS 
3 latency, i have made changes accordingly in the u-boot.

The board is up and booting now.I am able to see the debug statements on 
the UART terminal.
But when i try to load a binary file using loadb command, there are 
errors in loading and the board hangs giving a warning message as 
quoted. The file loading also gets aborted.

"## Switch baudrate to 115200 bps and press ESC ...\n"

Because of this i am not able to load my test application and execute it 
on the board.

Why can this problem happen?

Has anyone faced a similar problem?Can any one help me out to sort this 
issue.

-- 
Regards,
Prathika R

[U-Boot] UART loadb problem in u-boot

[Wolfgang Denk]

Dear prathika,

In message <4B63CD35.9060400@deeopl.com> you wrote:
> 
> I am right now working on a board with PPC440EP processor.
> I am loading the u-boot on to the board. the board has DDR SDRAM of CAS 
> 3 latency, i have made changes accordingly in the u-boot.

Hm... what makes you so sure that your RAM configuration is really
working stable?

> The board is up and booting now.I am able to see the debug statements on 
> the UART terminal.

This is just very basic functionality. It is no prrof at all that your
system is running stable.

Can you, for example, boot Linux on your board? Is Ethernet working?

> But when i try to load a binary file using loadb command, there are 
> errors in loading and the board hangs giving a warning message as 
> quoted. The file loading also gets aborted.
> 
> "## Switch baudrate to 115200 bps and press ESC ...\n"
> 
> Because of this i am not able to load my test application and execute it 
> on the board.

Can you not load it with a JTAG debugger? Or burn it to flash
(together with the U-Boot image) and start it there?

> Why can this problem happen?

I belive your RAM is not working correctly. Chek the initialization
again.

Best regards,

Wolfgang Denk

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