Boot interface for device trees on ARM
wmb at firmworks.com
Wed May 19 03:25:38 EDT 2010
Nicolas Pitre wrote:
> Exact. For example, on ARM the machine ID is also used to figure out
> the MMU mapping needed to be able to simply be able to debug the very
> early assembly boot stage when there isn't even a stack available. While
> this info is stored in the machine record, it is actually
> subarchitecture specific and already half-digested for easy usage by
> that initial MMU setup. I just don't want to imagine what the
> equivalent functionality with DT would look like.
Under what circumstances would the Linux startup code not have a stack -
or not be able to set up one easily?
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