openwrt_lede/target/linux/adm8668/image/my-mkimage

#!/bin/sh
# my-mkimage
# This will pad given files to 64k boundaries to make a single u-boot image.
# we have to be fancy because u-boot mkimage is going to add 64 byte header, ...
# and i only know basic arithmetic.. ;)
#
# Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
[ $# -lt 2 ] && {
	echo usage: $0 loader.bin [rootfs.squashfs [fs_mark [...]]] output.bin
}

OLDSIZE=$(stat -c%s $1)
NEWSIZE=$(((OLDSIZE / 65536 + 1) * 65536 - 64))

dd if=$1 of=vmlinuz.tmp bs=$NEWSIZE conv=sync >/dev/null 2>&1
shift
appends=$(($# - 1))
echo
while [ $appends -gt 0 ]; do
	dd if=$1 of=temp bs=64k conv=sync >/dev/null 2>&1
	printf "### '%s' starts at 0x%x\n" "`basename $1`" "$((NEWSIZE+64))"
	cat temp >>vmlinuz.tmp
	shift
	appends=$((appends-1))
	NEWSIZE=$(stat -c%s vmlinuz.tmp)
done
echo
../../../../staging_dir/host/bin/mkimage -A mips -O linux -T kernel \
-C none -a 0x80400000 -e 0x80400000 -n "ADM8668 Linux Kernel(2.4.31)" \
-d vmlinuz.tmp $1

rm temp vmlinuz.tmp