[U-Boot-Users] U-Boot problems with MPC8272ADS

Scott Wood scottwood at freescale.com
Wed Sep 19 22:55:54 CEST 2007

Manil Gaouar wrote:
> I installed u-boot on my mpc8272ads board, and when I connect the
> board with a serial link to my pc, I don’t see any output in the
> console, I use cu S0 at 115200, I have connected a JTAG to see what’s
> happening in the board I can see that the PC register is changing and
> going through the memory, and the pc will be stuck in an infinite
> loop which means that he is waiting for an input,

That's hardly the only case in which code can get stuck in an infinite loop.

> probable the command prompt. I have compared different positions in
> my PC register and the u-boot.map and I can see which function my
> code is at, so u-boot is running, but why I don’t have a display??

Did you check that the serial port is properly initialized, including 
I/O pin and BRG setup?  Can you get serial output by manually poking the 
registers with the BDI?


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