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Re: physical memory layout info from within Redboot
- From: Gary Thomas <gthomas at redhat dot com>
- To: Nicolas Pitre <nico at cam dot org>
- Cc: eCos Discussion <ecos-discuss at sources dot redhat dot com>
- Date: 12 Mar 2002 15:46:01 -0700
- Subject: Re: [ECOS] physical memory layout info from within Redboot
- References: <Pine.LNX.4.44.0203121721320.6321-100000@xanadu.home>
On Tue, 2002-03-12 at 15:39, Nicolas Pitre wrote:
>
> I'm looking forward to move the linux-exec command up a bit (from the file
> packages/hal/arm/sa11x0/var/current/src/redboot_linux_exec.c) so it could be
> usable for all ARM targets instead of only being available to SA11x0.
>
> Since all Linux ARM kernels should use the same boot method, there is no
> reason for not having this functionality be available to any new ARM targets
> Redboot is ported to. There are some small things I intend to fix in the
> process as well, like determining many default values for reloc addr, image
> length, etc. directly from the kernel zImage binary, and validating the
> zImage magic number to ensure we're actually dealing with a Linux kernel
> image.
>
> However the most important information currently missing for the param tag
> list is the physical memory layout of the target Redboot is runing on. I
> still can't figure out how and where that information could be retrieved in
> an architecture independent way, wether Redboot is built for a SA110, an
> XScale, etc. What I need is the RAM physical location(s) and size(s).
>
> Any info welcome.
We've actually already done this - it will be available when eCos 2.0
comes out, hopefully around the end of the month :-)
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