In message 20040712212957.88820.qmail@web90006.mail.scd.yahoo.com you wrote:
I am trying to write an Assembly code , just to set-up the UART , so as to send a few characters via the serial port.
Why? There is a full-blown serial driver available written in C? Is this intended as a replacement for a missing BDI2000? Save your time, abd buy the BDI2000 _now_. Other wise your time is just wasted, as you will buy the BDI2000 later anyway.
I just have set-up the necessary registers forUART and as I am not doing any high level coding I havent set up the MMU , TLB etc. But my code doesnt seem to work !!!
Forget it. U-Boot was explicitely designed to bring up a serial console port as early as possible during initialization. OK, there are a few things that could be saved before running the serial driver, but this is just a tiny piece of the code you need to get right before you will see the first character on the serial line.
Don't try to re-invent the wheel.
I assumed that that CPU would direclty read fromthe Flash .I am new to this and so I need some advise of what all have to be done during board bring up, or where should I look for such documentation.
Use the existing U-Boot code. Attach a BDI2000 and just type "ti" at the telnet prompt, or "d/i $pc" + "si" in GDB...
Best regards,
Wolfgang Denk