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.
Yeah. I totally agree. The difference between newbies and experts is that experts know exactly how much effort a change will make and how to do it. Newbies have to learn from experts and practices. Please bear with me. ;)
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?
My stupidity. The first instruction should be at 0xFFE00100 in my case. The image is linked at 0xFFE00000.
Now the code is running but certainly has problems. I'm trying to fix them.
THanks, -Shawn.
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