Hi Peter,
> All the tasks you mention here are performed by U-Boot. U-Boot _is_
> the boot loader.
>
> Right, I'm just having trouble getting to grips with the code flow, the
> start.S
> in the CPU is the initial entry point, at what point does that hand over to
> U-Boot? Any chance you could give me a brief overview of the code flow? In
> particular where the code I need to write fits in with the boot process, i.e.
> where I need to interface with U-Boot.
>
> Once I've got a better idea of how U-Boot boots, I should be able to get
> started at least.
Be sure to read the section "Implementation Internals" in the README.
Other than that, simply trace the flow (on a piece of paper) for a
comparable board, e.g. the "purple" board which seems to be pretty close
to what you have.
Another hint is that functions in U-Boot ending with _f are run from
flash, wherease functions ending in _r run already relocated from RAM.
I hope this gets you started.
Cheers
Detlev
--
It's like manually inflatable airbags -- people will never
think to use it in time to actually get any help from it.
-- Miles Bader in <20030607122005.ga1...@gnu.org>
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