Re: [ECOS] Building redboot ROM image

[Harish Kulkarni <wasinapple at yahoo dot com>]

Thanks Gary Thomas,

In leon code we found only the data section is copied
from ROM to RAM in ROM type start-up, which means rest
of all the sections including vectors, text will get
space in ROM and will not get relocated.

Relocating from ROM to RAM, including vectors, text,
and other sections would reduce the execution time
required, which is a MUST.

Is the approach of relocating sections (all) from ROM
to RAM is generic or specific to processor OR board we
use? ( other then changes mem-maps).

If it's generic could you redirect me to such a piece
of code, which is written and implemented for eCos
porting, i prefer it to be specific to leon.

Harish



--- Gary Thomas <gary@mlbassoc.com> wrote:

> On Mon, 2005-08-15 at 19:55 +0100, Harish Kulkarni
> wrote:
> > Hello,
> > 
> > Having tuff time with rom based redboot image,
> please
> > redirect me to mem-map file and section of code
> which
> > does copy from rom to ram?
> > 
> > Just by coping data section from rom to ram is
> > suffient?
> > 
> > PS: Prefer it to be specific to leon.
> 
> In general, you'll need to select ROMRAM startup,
> not just ROM.
> ROM mode programs execute code directly from ROM
> (FLASH) and
> are not copied into RAM.
> 
> -- 
>
------------------------------------------------------------
> Gary Thomas                 |  Consulting for the
> MLB Associates              |    Embedded world
>
------------------------------------------------------------
> 
> 
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