[rescue] SPARCstation 1 boot woes

[Ethan Hawke]

> I could have a stab at reverse-engineering it, if that's OK with you.
> I'm interested the underlying details.
Of course, do as you please, but I have a better proposal.

>   Ok, no worries.  I'm just interested in how you mapped the PROM into 
> the address space. 

There seems to be quite a bit of interest, fortunately I have a very wet
long weekend this week, and it is a good opportunity to clean it up and 
release
the src, plus add support for some sun4u platforms (Fusion and Fiesta).

SPARC is great platform to learn on (and the reason I got into it) and 
the MMU
design differs wildly between variants (sun4c/sun4m/sun4u/sun4v). I'll 
comment
the code verbosely to describe how the MMU works on each and also how to use
the OpenBoot client interface (and OF interface) for those who are 
interested.

Cheers,
Ethan


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