From mboxrd@z Thu Jan  1 00:00:00 1970
From: Cristiano Ligieri Pereira <cpereira@ics.uci.edu>
To: Mark Salter <msalter@redhat.com>
Cc: ecos-discuss@sourceware.cygnus.com
Subject: Re: [ECOS] What's the definition of VROM memory region used for?
Date: Thu, 02 Aug 2001 21:02:00 -0000
Message-id: <Pine.SOL.4.20.0108022004570.22544-100000@washoe.ics.uci.edu>
References: <200108030011.f730Bi631744@deneb.localdomain>
X-SW-Source: 2001-08/msg00094.html

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
>