[ECOS] Redboot -Linux serial communication.

Jonathan Larmour jlarmour@redhat.com
Tue Jan 15 06:28:00 GMT 2002


umesh jaiswal wrote:
> 
> Dear Jo...
> Thanks for your continuous help since past some days.
>          As I am working on Redboot - ecos ,I have
> still some problems .
> According to you I have tried minicom on linux to
> connect to my redboot with serial port ,using null
> modem cable,but failed to load the file from linux to
> redboot.
> I have done all nessesorry arrengement for serial
> connection .  I tried to upload the file with  all
> protocols like xmodem, ymodem zmodem, asciimodem but
> couldn't. what I got is simply time out on path name
> massege.I also tried from redboot side too,using the
> load command.

You have to use the load command in RedBoot and *then* use Ctrl-a s in
minicom, selecting the same protocol you told RedBoot (in the example
below, xmodem). 

> I have used com2 port with /dev/ttys1 since my mouse
> is in port com1 (dev/ttyS0).
> I also tried the different baud rates .
> I don't know where is my mistake
> I also put the line
> append="console=ttyS console=ttyS1 384008N1 " in
> lilo.conf file.

Don't do that. That's for the linux kernel console.

> But couldn,t get success .
> please help me out ....
> Regards !!
> umesh
> --- Jonathan Larmour <jlarmour@redhat.com> wrote:
> > umesh jaiswal wrote:
> > >
> > >  Hi all ,
> > >
> > >              I am newbe to redboot & ecos .
> > > I have  booted my pc (i386) with the help of
> > redboot
> > > from floppy .
> > > I amazed to see the result that how a single stand
> > > alone redboot can boot a pc .
> > > I want to load certain files with redboot ,for
> > that  I
> > > connect two pc one is having linux & other is
> > booted
> > > from redboot  with serial ports. Then I run
> > following
> > > commonds from redboot prompt.
> > >             Load -r -v -m xmodem  filename -b
> > > <base_address>
> > > The filename is my executable file of linux
> > > application programe .similarly I also tried for
> > other
> > > files.
> >
> > Yes, but you have to be talking to RedBoot from the
> > Linux side too! Try
> > using minicom and sending the file with Ctrl-a s

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