Re: [ECOS] Redboot vs GDB application download (ARM E7T)

["Ali Sina" <replay688 at hotmail dot com>]

Hello,

is there any difference between loading an application to RAM and running it 
there via Redboot as opposed to via GDB?

On the E7T with a ROM Redboot I observe the following:
- loading the app to RAM via GDB and starting it (continue) works fine. 
Application has not crashed in months.
- loading the same code to RAM via Redboot (load -m xmodem) and starting it 
(go) will start the application but the systems hangs after a few seconds.

Anyone a clue as to why this could be happening?

Thanks,

AS


> From: Gary Thomas <gary@mlbassoc.com>
> To: Ali Sina <replay688@hotmail.com>
> CC: eCos Discussion <ecos-discuss@ecos.sourceware.org>
> Subject: Re: [ECOS] E7T ROMRAM startup anyone? Alternatives?
> Date: Wed, 15 Jun 2005 13:48:35 -0600
>
> On Wed, 2005-06-15 at 19:39 +0000, Ali Sina wrote:
> > Hello all,
> >
> > another E7T question -
> > has anyone succeeded at implementing a ROMRAM startup for the ARM E7T?
> >
> > Or what other options are there for having an app. stored in ROM (see my
> > previous posts) and have it run from RAM?
> >
> > Can I somehow use Redboot "mcopy" in an automated way (i.e. upon 
> startup) to
> > copy it from ROM to RAM and start it from RAM? (assuming the app was
> > compiled to run from RAM, of course)
> >
> > Any other ideas of how to achieve ROMRAM type of behavior?
>
> ROMRAM startup mode is really only for *the* monitor program, e.g.
> RedBoot.  It's purpose is to take a program which has to run from
> FLASH/ROM from the start (e.g. the system initialization code) and
> allow it to run from RAM after some suitable minimal setup.
>
> RedBoot has FIS (FLASH Image System) which can store images.  These
> can be programs or data.  You simply put your RAM program into a
> FIS image then load and execute it at boot time.
>
> Sadly, I think the E7T has such little FLASH &/or RAM that these
> features are normally left turned off.
>
> --
> ------------------------------------------------------------
> Gary Thomas                 |  Consulting for the
> MLB Associates              |    Embedded world
> ------------------------------------------------------------

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