In message 422641B0.50602@orkun.us you wrote:
Perhaps, there could be a U-Boot project sanctioned primary boot loader framework. Much of the code to do that is already in U-Boot anyway (like common CPU initialization code). Some of the board level initialization code and any board specific code for retrieving U-Boot image would need to be there as well.
I seriously doubt that the existing code could be used. It's build around the central assumption that ease debugging is most important, so for example a serial console port is provided as early as possible, long before even attempting to initialize any system memory (RAM or flash). This pulls in a serial driver, and printf, and ...
Alternatively if you do not like that idea, U-Boot project would formally define the guidelines of operation in a system where primary boot loader is required and state the requirements (state of DRAM, relocation etc) expected from such primary bootloader.
...
Defining the guidelines, requirements and the interface would significantly help steer the development in the right direction. It is better than saying not supported but developer has to do it anyway. At least, such formalism would help the process.
Please feel free to submit such a definition of guidelines, require- ments and interfaces.
Best regards,
Wolfgang Denk