You can use redboot to launch arbitrary code that runs on the hardware
without an OS. The MMU should already be set up for virtual ==
physical and the CPU is in supervisory mode. Also, source code for
eCos/RedBoot is freely available and could also be modified and
rebuilt. We can't have the TS-BOOTROM or RedBoot manipulate the LCD
by default at startup since some people connect the LCD port to other
things (such are solenoids or motors). A Linux C source file to
manipulate a HD44780 display exists in the files section of this group
and when it comes down to it, isn't very complicated and could be
easily adapted to run without an OS.
Also, Technologic Systems can be commissioned to make these sorts of
modifications inside the bootrom and supply you with a modified
bootrom or redboot image. Once developed, the custom TS-BOOTROM could
be shared.
Also, we've just started offering to pre-load
customer-supplied/configured flash images for volume orders. We've
seen that a lot of shops are investing time/energy in redeveloping a
production loading process that really already exists in well-tuned
form at Technologic Systems.
//Jesse Off
--- In James Kemp <> wrote:
>
> I too have the same problem.
>
> It seems to take an eternity before Linux boots to a point where the
lcd can
> be initialized.
>
> I sure hope someone has an idea here.
>
> Jim
>
> On 10/13/05, prtsoftware <> wrote:
> >
> > I've got the same issue.
> >
> > Does anyone know what kind of effort it would be to initialize the LCD
> > (HD44780) and display "Starting..." in the redboot script?
> >
> > Fifteen seconds is an eternity when turning on a device. I'm always
> > tempted to "pull the plug" because something must surely be wrong!!!
> >
> > Tom
> >
> >
> > --- In Andy Gryc <> wrote:
> > >
> > > With the default configuration as supplied by Technologic, it's
between
> > > 10 and 15 seconds.
> > > --Andy Gryc
> > >
> > >
> > > earls98295 wrote:
> > >
> > > >Hello All, I am a new group member looking at Arm / Linux
> > > >architecture for an embedded system. The TS7000 caught my
> > > >eye. The application I am looking at would require low power
> > > >operation, however the Boot up time to get a user interface
> > > >(buttons and LCD graphics panel) up and running is important.
> > > >
> > > >Could anybody give me an Idea as to how long it would take
> > > >to get an application running from a cold start on the TS7000 ?
> > > >
> > > >Thanks
> > > >Earl Schmidt
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
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