NetBSD/sys/arch/walnut/compile/mkimg.sh

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#!/bin/sh
# $NetBSD: mkimg.sh,v 1.2 2001/09/17 15:57:00 reinoud Exp $
# Convert a kernel to an tftp image loadable by the walnut IBM openbios.
if [ $# -ne 2 ] ; then
echo usage: $0 kernel image 1>&2
exit 1
fi
kernel=$1; shift
output=$1; shift
: ${OBJDUMP=objdump}
: ${OBJCOPY=objcopy}
start=`${OBJDUMP} -f ${kernel} | awk '/start address/ { print $NF }'`
start=`printf "%d" $start`
${OBJCOPY} -O binary ${kernel} ${kernel}.bin.$$
size=`/bin/ls -l ${kernel}.bin.$$ | awk '{ printf "%d", ( $5 + 511 ) / 512 }'`
printf "%d\n%d\n0\n%d\n0\n0\n0\n" $start $size $start |
awk 'BEGIN { printf "\x00\x52\x50\x4f" }
{
printf "%c", $0 / 256 / 256 / 256 ;
printf "%c", $0 / 256 / 256 ;
printf "%c", $0 / 256 ;
printf "%c", $0 ;
}
' > ${output}
cat ${kernel}.bin.$$ >> ${output}
rm -f ${kernel}.bin.$$
exit