#!/bin/sh
#
# Utility for constructing PCMCIA initrd boot images
#
# Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net
#
# pcinitrd 1.23 2000/07/25 18:31:31
#
RELEASE=""
ALL=""
SIZE=2400
MODULES="pcmcia/pcmcia_core.o pcmcia/ds.o"

# Things to install when "all" is selected
SOCK="i82365.o tcic.o"
BLK="ide_cs.o pcmem_cs.o aha152x_cs.o fdomain_cs.o qlogic_cs.o"
MEM="ftl_cs.o memory_cs.o sram_mtd.o iflash2_mtd.o iflash2+_mtd.o"

usage()
{
    echo "usage: $0 [-v] [-a|-all] [-u|--update] [-r|--kernel=kernel-release]" >&2
    echo "       [-s|--size=image-size] [-d|--dir=root-dir] <initrd-image> [modules ...]" >&2
    exit 1
}

while [ $# -gt 0 ] ; do
    case $1 in
    -a|--all)
	ALL=y
	;;
    -d)
	ROOT=$2 ; shift
	;;
    --dir=*)
	ROOT=`echo $1 | sed -e 's/^--dir=//'`
	;;
    -r)
	KERNEL=$2 ; shift
	;;
    --release=*)
	KERNEL=`echo $1 | sed -e 's/^--kernel=//'`
	;;
    -s)
	SIZE=$2 ; shift
	;;
    --size=*)
	SIZE=`echo $1 | sed -e 's/^--size=//'`
	;;
    -u|--update)
	UPDATE=y
	;;
    -v|--verbose)
	VERBOSE=--verbose
	;;
    -*)
	usage
	exit 1
	;;
    *)
	break
	;;
    esac
    shift
done

if [ "$KERNEL" = "" ] ; then
    KERNEL=`uname -r`
fi
[ "$VERBOSE" ] && echo "Using version $KERNEL modules"
MODDIR=$ROOT/lib/modules/$KERNEL

if [ $# -lt 1 ] ; then usage ; fi
TARGET=$1 ; shift
if [ "$ALL" = "y" ] ; then
    for MOD in $SOCK $BLK $MEM ; do
	if [ -f $MODDIR/pcmcia/$MOD ] ; then
	    MODULES="$MODULES pcmcia/$MOD"
	fi
    done
fi

BIN="bin/mount bin/umount sbin/insmod sbin/cardmgr"
LIB=`ls $ROOT/lib/libc.so.? | sort | tail -1`
ETC="/etc/ld.so.cache /etc/pcmcia/config /etc/pcmcia/config.opts"
DEV="/dev/console /dev/null /dev/ram /dev/tty1 /dev/tty2 /dev/tty3 /dev/tty4"
LF=`file -bL $LIB`
for F in $* ; do
    if [ -f $MODDIR/$F ] ; then
	MODULES="$MODULES $F"
    elif [ -x $ROOT/$F ] ; then
	FT=`file -bL $ROOT/$F`
	if [ "$FT" = "$LF" ] ; then
	    LIB="$LIB $F"
	else
	    BIN="$BIN $F"
	fi
    elif [ -b $ROOT/$F -o -c $ROOT/$F ] ; then
	DEV="$DEV $F"
    elif [ -f $ROOT/$F ] ; then
	ETC="$ETC $F"
    else
	echo "$F not found." 1>&2
	exit 1
    fi
done

fail()
{
    umount $VERBOSE $MNT
    rmdir $MNT
    exit 1
}
trap fail SIGTERM SIGINT

strip_cp()
{
    if [ -d $3 ] ; then
	DEST=$3/`basename $2`
    else
	DEST=$3
    fi
    strip $1 $VERBOSE -o $DEST $2 | sed -e 's/([^ ]*)//g' || fail
}

MNT=$ROOT/tmp/initrd.mnt-$$
mkdir $VERBOSE $MNT || exit 1

if [ "$UPDATE" = "y" ] ; then
    if [ -b $TARGET ] ; then
	mount $VERBOSE -t ext2 $TARGET $MNT || fail
    else
	mount $VERBOSE -t ext2 -o loop $TARGET $MNT || fail
    fi
    strip_cp --strip-all $ROOT/sbin/cardmgr $MNT/sbin || fail
    CD=`pwd` ; cd $MNT
    for DIR in block misc fs net pcmcia ; do
	for MOD in $DIR/*.o ; do
	    strip_cp --discard-all $ROOT/lib/modules/$MOD $DIR || fail
	done
    done
    cd $CD
    umount $VERBOSE $MNT
    rmdir $MNT
    exit 0
fi

[ "$VERBOSE" ] && echo "Creating filesystem on $TARGET"
if [ -b $TARGET ] ; then
    mke2fs $TARGET $SIZE > /dev/null || fail
    mount $VERBOSE -t ext2 $TARGET $MNT || fail
else
    dd if=$ROOT/dev/zero of=$TARGET bs=1k count=$SIZE
    echo "y" | mke2fs $TARGET $SIZE >/dev/null || fail
    mount $VERBOSE -t ext2 -o loop $TARGET $MNT || fail
fi

rm -rf $MNT/lost+found
for DIR in bin dev etc lib proc tmp mnt ; do
    mkdir $VERBOSE $MNT/$DIR || fail
done
for DIR in block misc fs net pcmcia ; do
    mkdir $VERBOSE $MNT/lib/$DIR || fail
done

for F in $DEV ; do
    cp -a $VERBOSE $ROOT/$F $MNT/dev || fail
done
if [ -e $ROOT/dev/systty ] ; then
    cp -a $VERBOSE $ROOT/dev/systty $MNT/dev || fail
fi

for F in $BIN ; do
    strip_cp --strip-all $ROOT/$F $MNT/bin
done
strip_cp --strip-all $ROOT/bin/ash $MNT/bin/sh

for F in $LIB ; do
    strip_cp --strip-debug $ROOT/$F $MNT/lib
done
cp $VERBOSE $ROOT/lib/ld-linux.so.? $MNT/lib || fail

for F in $ETC ; do
    cp $VERBOSE $ROOT/$F $MNT/etc || fail
done
for F in scsi network ftl ide memory serial ; do
    touch $MNT/etc/$F ; chmod +x $MNT/etc/$F
done

for MOD in $MODULES ; do
    strip_cp --strip-debug $MODDIR/$MOD $MNT/lib/$MOD
done

[ "$VERBOSE" ] && echo "Creating linuxrc startup script"
cat > $MNT/linuxrc <<- 'EOF'
	#!/bin/sh
	
	# Should be either i82365 or tcic
	PCIC=i82365
	# Put socket driver timing parameters here
	PCIC_OPTS=
	# Put pcmcia_core options here
	CORE_OPTS=
	
	mount -t proc /proc /proc

	echo ""
	echo "==== initrd: starting PCMCIA services ===="
	echo ""
	PC=/lib/pcmcia
	insmod $PC/pcmcia_core.o $CORE_OPTS
	insmod $PC/$PCIC.o $PCIC_OPTS
	insmod $PC/ds.o
	if [ "$DEBUG" != "" ] ; then V=-v ; fi
	cardmgr $V -q -o -c /etc -m /lib -s /tmp/stab -p /tmp/pid
	umount /proc
	echo ""
	
	if [ "$DEBUG" != "" ] ; then
	    /bin/sh < /dev/console
	fi
EOF
chmod +x $MNT/linuxrc 

df -P $MNT | awk '/tmp/ { printf "%dK/%dK used\n",$3,$2 }'
umount $VERBOSE $MNT
rmdir $MNT
exit 0