In message 963b3387040909105576176dee@mail.gmail.com you wrote:
U-Boot will NOT fit into a 16 kB block. And U-Boot cannot be made to boot directly from such a block. You will need to implement a different loader.
So I guess that my best option would be to use a small primary bootloader to boot U-Boot from RAM.
Indeed.
If I am reading everything correctly, I should have to change the reset and start locations (.resetvec and .bootpg) along with the setup of the MMU (as all TLB Entries are cleared currently.)
Remember that U-Boot does not use virtual memory.
I'm probably missing other steps that are required, I'll be looking at the startup code in more detail.
Indeed. You will ahve to re-invent all CPU and memory controller init stuff in your primary bootstrap loader, and disable them in U-Boot. It's serious surgery...
Best regards,
Wolfgang Denk