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Re: What's the definition of VROM memory region used for?
- To: Mark Salter <msalter at redhat dot com>
- Subject: Re: [ECOS] What's the definition of VROM memory region used for?
- From: Cristiano Ligieri Pereira <cpereira at ics dot uci dot edu>
- Date: Thu, 2 Aug 2001 21:02:18 -0700 (PDT)
- cc: ecos-discuss at sourceware dot cygnus dot com
Is this something specific to the IQ80310? Or it's something tighened to
the arm hal and hence should be present in all the ARM ports?
I don't remember to have seen this in other ports...
thanks again,
Cristiano.
------------------------------------------------------------
Cristiano Ligieri Pereira - http://www.ics.uci.edu/~cpereira
> Its part of the trickery with fixed_vectors on the IQ80310. Flash is at
> address zero, but that is where the CPU looks for exception vectors and
> where the arm hal expects the exception vectors to be. VROM is the 4K
> page which maps virtual address zero (where the vectors need to be) to
> RAM so that the vectors are writable.
>
> --Mark
>