In message 20040623021134.57900.qmail@web20704.mail.yahoo.com you wrote:
At the very beginning u-boot is executed from flash. That's why there are some functions with postfix xxx_f(). Since the system has been initialized by the original bootloader, is it possible to skip this step and to copy the necessary part of u-boot to RAM and then to execute it from RAM?
Everything is possible. The question is if it makes sense to change too many things, i. e. how much effort it will make and which advantages you have when doing these changes.
I did built an image and put it at 0xFFE00000. However it cannot step forward from the very first instruction.
Who says that the first instruction is at offset 0? And for which address was your image linked?
Best regards,
Wolfgang Denk