Experimental Physics and
Industrial Control System

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'.

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).

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
====================================================

Replies:

Re: Booting RTEMS IOC problem Eric Norum

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Re: Booting RTEMS IOC problem Eric Norum

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