[ECOS] physical memory layout info from within Redboot

Gary Thomas gthomas@redhat.com
Tue Mar 12 16:07:00 GMT 2002

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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