#!/bin/ksh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

# defaults
setvar bblen = '7680'
setvar rdlen = '256'
setvar totlen = '7680'

while getopts b:r:e: a {
	match $a {
	with b setvar bblen = "$OPTARG"
	with r setvar rdlen = "$OPTARG"
	with e setvar extra = "$OPTARG"
	   setvar totlen = '15872'
	with ? printf "Usage: %s: [ -b bb_len ] [ -r rd_len ] boot_fcode ramdisk_fcode bootblk\n" $0
	   exit -1
	}
}
shift $(($OPTIND - 1))

#
# check boot code and ramdisk code for size overflow
#
setvar rdoff = $(($bblen - $rdlen))

setvar bbsize = $(ls -l $1 | awk -e '{ print $5 }')
if test $bbsize -gt $rdoff {
    printf "$1 must be smaller than $rdoff\n"
    exit -1
}

setvar rdsize = $(ls -l $2 | awk -e '{ print $5 }')
if test $rdsize -gt $rdlen {
    printf "$1 must be smaller than $rdlen\n"
    exit -1
}

#
# make the bootblk
#
mkfile -n $totlen $3
chmod 644 $3
dd if=$1 of=$3 conv=notrunc bs=1
dd if=$2 of=$3 conv=notrunc bs=1 oseek=$rdoff

#
# extended bootblk for zfs debug
#
if test $totlen -gt $bblen {
    setvar extsize = $(ls -l $extra | awk -e '{ print $5 }')
    if test $extsize -gt 16384 {
	printf "$1 must be smaller than 16k\n"
	exit -1
    }
    dd if=$extra of=$3 conv=notrunc bs=1 oseek=$bblen
}

exit 0