Re: Booting RTEMS IOC problem

[Till Straumann <strauman@SLAC.Stanford.EDU>]

Eric Norum wrote:
> On Thursday, December 12, 2002, at 02:44  AM, Edwin wrote:
>
> > Dear all:
> >     I have finished building RTEMS boot images with EPICS 3.14 on
> > Linux, Host and client are both pc386.
> >     While when I am trying to boot the IOC through BOOTP, my IOC
> > stuck when loading the boot image "example.bt".
> >
> >     I wrote the /etc/bootptab file as follows:
> >     client1:hd=/epics/client1/bin:\
> >         :vm=auto:ip=166.111.32.246:td=/tftpboot:\
> >         :ht=ethernet:ha=0000ECD01FC7:\
> >          :bf=example.bt:rp=/boot/client1/root
> >
> >     I download a bootstrap PROM image from www.rom-o-matic.net,
> > which find my boopd service on my host pc successfully
> > and start to download the boot image 'example.bt'. Screen prints:
> >     .Me: 166.111.32.246, Server: 166.111.32.244
> >     Loading 166.111.32.244:/epics/client1/bin/example.bt ...(NBI)...
>
> I believe that the 'NBI' means 'non-bootable image'.

My 2 cents:

Hmm - etherboot uses the term NBI also; there it means 'Net Boot Image'
which would indicate that it indeed could be the correct image (with
the startup stuff added).

-- T.

>  From this error 
> message I'm guessing that you copied the executable EPICS application 
> (bin/RTEMS-pc386/example) to the TFTP server (....../bin/example.bt).   
>  The rom-o-matic network boot ROMS however require a short 16-biit 
> startup section of code to be prepended to the EPICS application.
>
> Here's the script which I use to do this.  I called it makeBootImage and 
> run it as
> makeBootImage bin/RTEMS-pc386/example
> to produce example.bt which can be copied to the TFTP server.
> ================================================
> #!/bin/sh
>
> set -ex
>
> case "$#" in
>         1)      ;;
>         *)      echo "Usage: $0 file[.exe]" >&2 ; exit 1 ;;
> esac
> n=`basename "$1" .exe`
>
> code=2
> trap 'rm -f /tmp/jnk$$.bin ; exit $code' 0 1 2 3
>
> i386-rtems-objcopy --output-target=binary "$1" /tmp/jnk$$.bin
> /opt/rtems/i386-rtems/pc386/build-tools/bin2boot "$n.bt" 0x00097E00 
> /opt/rtems/i386-rtems/pc386/lib/start16.bin 0x00097C00 0 /tmp/jnk$$.bin 
> 0x00100000 0
> code=0
> ====================================================