releasetools/*image.sh

- Removed an "export CPPFLAGS=${FLAG}" which prevented proper settings
   from the environment to be passed to the build step.

 - Re-arranged variable settings at the top, so that we don't need
   to evaluate the argument to vfat mkfs command anymore in
   arm_sdimage.sh

 - "Merged" both script for easier comparison in the future.

Change-Id: Id59f902e4eaeb7f268d5051789462f14421a114a
This commit is contained in:
Lionel Sambuc 2014-08-08 14:05:25 +02:00
parent b06a8f390e
commit 17eed55f28
2 changed files with 196 additions and 160 deletions

View file

@ -1,6 +1,11 @@
#!/usr/bin/env bash
set -e
#
# This script creates a bootable image and should at some point in the future
# be replaced by makefs.
#
#
# Source settings if present
#
@ -24,32 +29,53 @@ fi
: ${FSTAB=${DESTDIR}/etc/fstab}
: ${BUILDVARS=-V MKGCCCMDS=yes -V MKLLVM=no}
: ${BUILDSH=build.sh}
: ${CREATE_IMAGE_ONLY=0}
: ${RC=minix_x86.rc}
# Where the kernel & boot modules will be
MODDIR=${DESTDIR}/boot/minix/.temp
#
# Directory where to store temporary file system images
#
: ${IMG_DIR=${OBJ}/img}
: ${IMG=minix_arm_sd.img}
: ${MLO=MLO}
: ${UBOOT=u-boot.img}
# Beagleboard-xm
: ${U_BOOT_BIN_DIR=build/omap3_beagle/}
: ${CONSOLE=tty02}
# BeagleBone (and black)
#: ${U_BOOT_BIN_DIR=build/am335x_evm/}
#: ${CONSOLE=tty00}
#
#
# We host u-boot binaries.
#
U_BOOT_GIT_VERSION=cb5178f12787c690cb1c888d88733137e5a47b15
# Set the vfat mkfs command. We need to re-evaluate MKFS_VFAT_OPTS after
# FAT_SIZE is set :-(
#
# All sized are written in 512 byte blocks
#
# we create a disk image of about 2 gig's
# for alignment reasons, prefer sizes which are multiples of 4096 bytes
#
: ${IMG_SIZE=$(( 2*(2**30) / 512))}
: ${FAT_SIZE=$(( 10*(2**20) / 512))}
: ${ROOT_SIZE=$(( 64*(2**20) / 512))}
: ${HOME_SIZE=$(( 128*(2**20) / 512))}
: ${USR_SIZE=$(( 1792*(2**20) / 512))}
#
# Do some math to determine the start addresses of the partitions.
# Don't leave holes so the 'partition' invocation later is easy.
#
FAT_START=2048
ROOT_START=$(($FAT_START + $FAT_SIZE))
USR_START=$(($ROOT_START + $ROOT_SIZE))
HOME_START=$(($USR_START + $USR_SIZE))
case $(uname -s) in
Darwin)
MKFS_VFAT_CMD=newfs_msdos
@ -65,14 +91,13 @@ FreeBSD)
;;
esac
if [ -n "$BASE_URL" ]
then
#we no longer download u-boot but do a checkout
#BASE_URL used to be the base url for u-boot
#Downloads
echo "Warning:** Setting BASE_URL (u-boot) is no longer possible use U_BOOT_BIN_DIR"
echo "Look in ./releasetools/arm_sdimage.sh for suggested values"
echo "Look in ${RELEASETOOLSDIR}/arm_sdimage.sh for suggested values"
exit 1
fi
@ -82,7 +107,7 @@ then
exit 1
fi
export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:$PATH
export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:${PATH}
for needed in mcopy dd ${MKFS_VFAT_CMD} git
do
@ -93,51 +118,57 @@ do
fi
done
: ${IMG=minix_arm_sd.img}
#
# Are we going to build the minix sources?
#
if [ ${CREATE_IMAGE_ONLY} -eq 1 ]
then
if [ ! -d ${DESTDIR} ]
then
echo "Minix source code does'nt appear to have been built."
echo "Please try with \$CREATE_IMAGE_ONLY set to 0."
exit 1
fi
fi
#
# Artifacts from this script are stored in the IMG_DIR
#
mkdir -p $IMG_DIR
rm -rf ${IMG_DIR} ${IMG}
mkdir -p ${IMG_DIR}
#
# Download the stage 1 bootloader and u-boot
#
./releasetools/fetch_u-boot.sh -o ${RELEASETOOLSDIR}/u-boot -n $U_BOOT_GIT_VERSION
${RELEASETOOLSDIR}/fetch_u-boot.sh -o ${RELEASETOOLSDIR}/u-boot -n $U_BOOT_GIT_VERSION
cp ${RELEASETOOLSDIR}/u-boot/${U_BOOT_BIN_DIR}/u-boot.img ${IMG_DIR}/
cp ${RELEASETOOLSDIR}/u-boot/${U_BOOT_BIN_DIR}/MLO ${IMG_DIR}/
#
# Remove the generated files to allow us call build.sh without '-V SLOPPY_FLIST=yes'.
#
rm -f ${FSTAB}
if [ ${CREATE_IMAGE_ONLY} -eq 0 ]
then
echo "Going to build Minix source code..."
#
# Remove the generated files to allow us call build.sh without '-V SLOPPY_FLIST=yes'.
#
rm -f ${FSTAB}
#
# Now start the build
#
export CPPFLAGS=${FLAG}
sh ${BUILDSH} -j ${JOBS} -m ${ARCH} -O ${OBJ} -D ${DESTDIR} ${BUILDVARS} -U -u distribution
#
# Now start the build.
#
sh ${BUILDSH} -j ${JOBS} -m ${ARCH} -O ${OBJ} -D ${DESTDIR} ${BUILDVARS} -U -u distribution
#
# This script creates a bootable image and should at some point in the future
# be replaced by makefs.
#
# All sized are written in 512 byte blocks
#
# we create a disk image of about 2 gig's
: ${IMG_SIZE=$(( 2*(2**30) / 512))}
: ${FAT_SIZE=$(( 10*(2**20) / 512))}
: ${ROOT_SIZE=$(( 64*(2**20) / 512))}
: ${HOME_SIZE=$(( 128*(2**20) / 512))}
: ${USR_SIZE=$(( 1536*(2**20) / 512))}
eval MKFS_VFAT_OPTS="\"$MKFS_VFAT_OPTS\""
fi
#
# create a fstab entry in /etc this is normally done during the
# setup phase on x86
#
cat >${FSTAB} <<END_FSTAB
/dev/c0d0p2 /home mfs rw 0 2
/dev/c0d0p3 /usr mfs rw 0 2
/dev/c0d0p2 /usr mfs rw 0 2
/dev/c0d0p3 /home mfs rw 0 2
none /sys devman rw,rslabel=devman 0 0
END_FSTAB
@ -146,32 +177,43 @@ rm -f ${DESTDIR}/SETS.*
${CROSS_TOOLS}/nbpwd_mkdb -V 0 -p -d ${DESTDIR} ${DESTDIR}/etc/master.passwd
#
# Now given the sizes above use DD to create separate files representing
# the partitions we are going to use.
# make the different file system. this part is *also* hacky. We first convert
# the METALOG.sanitised using mtree into a input METALOG containing uids and
# gids.
# After that we do some magic processing to add device nodes (also missing from METALOG)
# and convert the METALOG into a proto file that can be used by mkfs.mfs
#
echo "Creating the file systems"
#
# read METALOG and use mtree to convert the user and group names into uid and gids
# FIX put "input somewhere clean"
#
cat ${DESTDIR}/METALOG.sanitised | ${CROSS_TOOLS}/nbmtree -N ${DESTDIR}/etc -C -K device > ${IMG_DIR}/input
# add rc (if any)
if [ -f ${RC} ]; then
cp ${RC} ${DESTDIR}/usr/etc/rc.local
echo "./usr/etc/rc.local type=file uid=0 gid=0 mode=0644" >> ${IMG_DIR}/input
fi
# add fstab
echo "./etc/fstab type=file uid=0 gid=0 mode=0755 size=747 time=1365060731.000000000" >> ${IMG_DIR}/input
# fill root.img (skipping /usr entries while keeping the /usr directory)
cat ${IMG_DIR}/input | grep -v "^./usr/" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR} -o ${IMG_DIR}/root.proto
#
# Create proto files for /usr and /home using toproto.
#
cat ${IMG_DIR}/input | grep "^\./usr/\|^. " | sed "s,\./usr,\.,g" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR}/usr -o ${IMG_DIR}/usr.proto
cat ${IMG_DIR}/input | grep "^\./home/\|^. " | sed "s,\./home,\.,g" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR}/home -o ${IMG_DIR}/home.proto
#
# Create the FAT partition, which contains the bootloader files, kernel and modules
#
dd if=/dev/zero of=${IMG_DIR}/fat.img bs=512 count=1 seek=$(($FAT_SIZE -1)) 2>/dev/null
#
# Create the empty image where we later will put the partitions in.
#
rm -f ${IMG}
dd if=/dev/zero of=${IMG} bs=512 count=1 seek=$(($IMG_SIZE -1))
#
# Do some math to determine the start addresses of the partitions.
# Don't leave holes so the 'partition' invocation later is easy.
#
FAT_START=2048
ROOT_START=$(($FAT_START + $FAT_SIZE))
HOME_START=$(($ROOT_START + $ROOT_SIZE))
USR_START=$(($HOME_START + $HOME_SIZE))
#
# Write the partition table using the natively compiled
# minix partition utility
#
${CROSS_TOOLS}/nbpartition -m ${IMG} ${FAT_START} "c:${FAT_SIZE}*" 81:${ROOT_SIZE} 81:${HOME_SIZE} 81:${USR_SIZE}
#
# Format the fat partition and put the bootloaders
# uEnv and the kernel command line in the FAT partition
@ -184,8 +226,8 @@ ${MKFS_VFAT_CMD} ${MKFS_VFAT_OPTS} ${IMG_DIR}/fat.img
# -p add a prefix to the network booted files (e.g. xm/"
# -c set console e.g. tty02 or tty00
# -v set verbosity e.g. 0 to 3
#./releasetools/gen_uEnv.txt.sh -c ${CONSOLE} -n -p bb/ > ${IMG_DIR}/uEnv.txt
./releasetools/gen_uEnv.txt.sh -c ${CONSOLE} > ${IMG_DIR}/uEnv.txt
#${RELEASETOOLSDIR}/gen_uEnv.txt.sh -c ${CONSOLE} -n -p bb/ > ${IMG_DIR}/uEnv.txt
${RELEASETOOLSDIR}/gen_uEnv.txt.sh -c ${CONSOLE} > ${IMG_DIR}/uEnv.txt
echo "Copying configuration kernel and boot modules"
mcopy -bsp -i ${IMG_DIR}/fat.img ${IMG_DIR}/$MLO ::MLO
@ -193,13 +235,8 @@ mcopy -bsp -i ${IMG_DIR}/fat.img ${IMG_DIR}/$UBOOT ::u-boot.img
mcopy -bsp -i ${IMG_DIR}/fat.img ${IMG_DIR}/uEnv.txt ::uEnv.txt
#
# For tftp booting
#
cp ${IMG_DIR}/uEnv.txt ${OBJ}/
#
# Do some last processing of the kernel and servers before also putting
# them on the FAT
# Do some last processing of the kernel and servers and then put them on the FAT
# partition.
#
${CROSS_PREFIX}objcopy ${OBJ}/minix/kernel/kernel -O binary ${OBJ}/kernel.bin
@ -224,42 +261,35 @@ do
done
#
# make the different file system. this part is *also* hacky. We first convert
# the METALOG.sanitised using mtree into a input METALOG containing uids and
# gids.
# Afther that we do some processing to convert the METALOG into a proto file
# that can be used by mkfs.mfs
# For tftp booting
#
echo "creating the file systems"
cp ${IMG_DIR}/uEnv.txt ${OBJ}/
#
# read METALOG and use mtree to conver the user and group names into uid and gids
# FIX put "input somwhere clean"
# Create the empty image where we later will put the partitions in.
# Make sure it is at least 2GB, otherwise the SD card will not be detected
# correctly in qemu / HW.
#
cat ${DESTDIR}/METALOG.sanitised | ${CROSS_TOOLS}/nbmtree -N ${DESTDIR}/etc -C -K device > ${IMG_DIR}/input
dd if=/dev/zero of=${IMG} bs=512 count=1 seek=$(($IMG_SIZE -1))
# add fstab
echo "./etc/fstab type=file uid=0 gid=0 mode=0755 size=747 time=1365060731.000000000" >> ${IMG_DIR}/input
# fill root.img (skipping /usr entries while keeping the /usr directory)
cat ${IMG_DIR}/input | grep -v "^./usr/" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR} -o ${IMG_DIR}/root.proto
#
# Create proto files for /usr and /home using toproto.
#
cat ${IMG_DIR}/input | grep "^\./usr/\|^. " | sed "s,\./usr,\.,g" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR}/usr -o ${IMG_DIR}/usr.proto
cat ${IMG_DIR}/input | grep "^\./home/\|^. " | sed "s,\./home,\.,g" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR}/home -o ${IMG_DIR}/home.proto
#
# Generate /root, /usr and /home partition images.
#
echo "Writing Minix filesystem images"
echo " - ROOT"
${CROSS_TOOLS}/nbmkfs.mfs -I $((${ROOT_START} * 512)) -b $((${ROOT_SIZE} / 8)) ${IMG} ${IMG_DIR}/root.proto
_ROOT_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -I $((${ROOT_START} * 512)) -b $((${ROOT_SIZE} / 8)) ${IMG} ${IMG_DIR}/root.proto`/512))
echo " - USR"
${CROSS_TOOLS}/nbmkfs.mfs -I $((${USR_START} * 512)) -b $((${USR_SIZE} / 8)) ${IMG} ${IMG_DIR}/usr.proto
_USR_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -I $((${USR_START} * 512)) -b $((${USR_SIZE} / 8)) ${IMG} ${IMG_DIR}/usr.proto`/512))
echo " - HOME"
${CROSS_TOOLS}/nbmkfs.mfs -I $((${HOME_START} * 512)) -b $((${HOME_SIZE} / 8)) ${IMG} ${IMG_DIR}/home.proto
_HOME_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -I $((${HOME_START} * 512)) -b $((${HOME_SIZE} / 8)) ${IMG} ${IMG_DIR}/home.proto`/512))
#
# Write the partition table using the natively compiled
# minix partition utility
#
${CROSS_TOOLS}/nbpartition -m ${IMG} ${FAT_START} "c:${FAT_SIZE}*" \
81:${_ROOT_SIZE} 81:${_USR_SIZE} 81:${_HOME_SIZE}
#
# Merge the partitions into a single image.

View file

@ -1,34 +1,47 @@
#!/bin/bash
#!/usr/bin/env bash
set -e
#
# This script creates a bootable image and should at some point in the future
# be replaced by makefs.
#
: ${ARCH=i386}
: ${OBJ=../obj.${ARCH}}
: ${CROSS_TOOLS=${OBJ}/"tooldir.`uname -s`-`uname -r`-`uname -m`"/bin}
: ${CROSS_PREFIX=${CROSS_TOOLS}/i586-elf32-minix-}
: ${JOBS=1}
: ${DESTDIR=${OBJ}/destdir.$ARCH}
: ${RELEASETOOLSDIR=./releasetools/}
: ${FSTAB=${DESTDIR}/etc/fstab}
: ${BUILDVARS=}
: ${BUILDSH=build.sh}
: ${CREATE_IMAGE_ONLY=0}
# Where the kernel & boot modules will be
MODDIR=${DESTDIR}/boot/minix/.temp
: ${RC=minix_x86.rc}
#
# Directory where to store temporary file system images
#
: ${IMG_DIR=${OBJ}/img}
: ${CDFILES=${IMG_DIR}/cd}
CDFILES=${IMG_DIR}/cd
# All sized are written in 512 byte blocks
#
# we create a disk image of about 2 gig's
# for alignment reasons, prefer sizes which are multiples of 4096 bytes
#
: ${ROOT_SIZE=$(( 64*(2**20) / 512))}
: ${HOME_SIZE=$(( 128*(2**20) / 512))}
: ${USR_SIZE=$(( 1792*(2**20) / 512))}
if [ ! -f ${BUILDSH} ]
then
echo "Please invoke me from the root source dir, where ${BUILDSH} is."
exit 1
fi
#
# Do some math to determine the start addresses of the partitions.
# Don't leave holes so the 'partition' invocation later is easy.
#
export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:${PATH}
# Where the kernel & boot modules will be
MODDIR=${DESTDIR}/boot/minix/.temp
while getopts "i" c
do
@ -40,7 +53,26 @@ do
done
: ${IMG=minix_x86.img}
: ${RC=minix_x86.rc}
if [ "x${ISOMODE}" = "x1" ]
then
# In iso mode, make all FSes fit (i.e. as small as possible), but
# leave some space on /
ROOTSIZEARG="-x 5"
else
# In hd image mode, FSes have fixed sizes
ROOTSIZEARG="-b $((${ROOT_SIZE} / 8))"
USRSIZEARG="-b $((${USR_SIZE} / 8))"
HOMESIZEARG="-b $((${HOME_SIZE} / 8))"
fi
if [ ! -f ${BUILDSH} ]
then
echo "Please invoke me from the root source dir, where ${BUILDSH} is."
exit 1
fi
export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:${PATH}
#
# Are we going to build the minix sources?
@ -73,25 +105,10 @@ then
#
# Now start the build.
#
export CPPFLAGS=${FLAG}
sh ${BUILDSH} -j ${JOBS} -m ${ARCH} -O ${OBJ} -D ${DESTDIR} ${BUILDVARS} -U -u distribution
fi
if [ "x${ISOMODE}" = "x1" ]
then
cp ${DESTDIR}/usr/mdec/boot_monitor ${CDFILES}/boot
cp ${MODDIR}/* ${CDFILES}/
. ./releasetools/release.functions
cd_root_changes # uses $CDFILES and writes $CDFILES/boot.cfg
# start the image off with the iso image; reduce root size to reserve
${CROSS_TOOLS}/nbwriteisofs -s0x0 -l MINIX -B ${DESTDIR}/usr/mdec/bootxx_cd9660 -n ${CDFILES} ${IMG}
ISO_SIZE=$((`${CROSS_TOOLS}/nbstat -f %z ${IMG}` / 512))
else
# just make an empty iso partition
ISO_SIZE=8
fi
#
# create a fstab entry in /etc this is normally done during the
# setup phase on x86
@ -113,7 +130,7 @@ ${CROSS_TOOLS}/nbpwd_mkdb -V 0 -p -d ${DESTDIR} ${DESTDIR}/etc/master.passwd
# After that we do some magic processing to add device nodes (also missing from METALOG)
# and convert the METALOG into a proto file that can be used by mkfs.mfs
#
echo "creating the file systems"
echo "Creating the file systems"
#
# read METALOG and use mtree to convert the user and group names into uid and gids
@ -139,51 +156,40 @@ cat ${IMG_DIR}/input | grep -v "^./usr/" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDI
cat ${IMG_DIR}/input | grep "^\./usr/\|^. " | sed "s,\./usr,\.,g" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR}/usr -o ${IMG_DIR}/usr.proto
cat ${IMG_DIR}/input | grep "^\./home/\|^. " | sed "s,\./home,\.,g" | ${CROSS_TOOLS}/nbtoproto -b ${DESTDIR}/home -o ${IMG_DIR}/home.proto
#
# This script creates a bootable image and should at some point in the future
# be replaced by makefs.
#
# All sized are written in 512 byte blocks
#
# we create a disk image of about 2 gig's
# for alignment reasons, prefer sizes which are multiples of 4096 bytes
#
: ${ROOT_SIZE=$(( 64*(2**20) / 512))}
: ${HOME_SIZE=$(( 128*(2**20) / 512))}
: ${USR_SIZE=$(( 1536*(2**20) / 512))}
if [ "x${ISOMODE}" = "x1" ]
then
# In iso mode, make all FSes fit (i.e. as small as possible), but
# leave some space on /
ROOTSIZEARG="-x 5"
cp ${DESTDIR}/usr/mdec/boot_monitor ${CDFILES}/boot
cp ${MODDIR}/* ${CDFILES}/
. ${RELEASETOOLSDIR}/release.functions
cd_root_changes # uses $CDFILES and writes $CDFILES/boot.cfg
# start the image off with the iso image; reduce root size to reserve
${CROSS_TOOLS}/nbwriteisofs -s0x0 -l MINIX -B ${DESTDIR}/usr/mdec/bootxx_cd9660 -n ${CDFILES} ${IMG}
ISO_SIZE=$((`${CROSS_TOOLS}/nbstat -f %z ${IMG}` / 512))
else
# In hd image mode, FSes have fixed sizes
ROOTSIZEARG="-b $((${ROOT_SIZE} / 8))"
USRSIZEARG="-b $((${USR_SIZE} / 8))"
HOMESIZEARG="-b $((${HOME_SIZE} / 8))"
# just make an empty iso partition
ISO_SIZE=8
fi
#
# Generate /root, /usr and /home partition images.
#
echo "Writing Minix filesystem images"
#
# Do some math to determine the start addresses of the partitions.
# Ensure the start of the partitions are always aligned, the end will
# always be as we assume the sizes are multiples of 4096 bytes, which
# is always true as soon as you have an integer multiple of 1MB.
#
ROOT_START=${ISO_SIZE}
echo " - ROOT"
ROOT_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -d $ROOTSIZEARG -I $(($ROOT_START*512)) ${IMG} ${IMG_DIR}/root.proto`/512))
USR_START=$((${ROOT_START} + ${ROOT_SIZE}))
_ROOT_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -d ${ROOTSIZEARG} -I $((${ROOT_START}*512)) ${IMG} ${IMG_DIR}/root.proto`/512))
USR_START=$((${ROOT_START} + ${_ROOT_SIZE}))
echo " - USR"
USR_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -d $USRSIZEARG -I $(($USR_START*512)) ${IMG} ${IMG_DIR}/usr.proto`/512))
HOME_START=$((${USR_START} + $USR_SIZE))
_USR_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -d ${USRSIZEARG} -I $((${USR_START}*512)) ${IMG} ${IMG_DIR}/usr.proto`/512))
HOME_START=$((${USR_START} + ${_USR_SIZE}))
echo " - HOME"
HOME_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -d $HOMESIZEARG -I $(($HOME_START*512)) ${IMG} ${IMG_DIR}/home.proto`/512))
_HOME_SIZE=$((`${CROSS_TOOLS}/nbmkfs.mfs -d ${HOMESIZEARG} -I $((${HOME_START}*512)) ${IMG} ${IMG_DIR}/home.proto`/512))
${CROSS_TOOLS}/nbpartition -m ${IMG} 0 81:${ISO_SIZE} 81:${ROOT_SIZE} 81:${USR_SIZE} 81:${HOME_SIZE}
#
# Write the partition table using the natively compiled
# minix partition utility
#
${CROSS_TOOLS}/nbpartition -m ${IMG} 0 81:${ISO_SIZE} \
81:${_ROOT_SIZE} 81:${_USR_SIZE} 81:${_HOME_SIZE}
mods="`( cd ${MODDIR}; echo mod* | tr ' ' ',' )`"
if [ "x${ISOMODE}" = "x1" ]
@ -191,5 +197,5 @@ then
echo "CD image at `pwd`/${IMG}"
else
echo "To boot this image on kvm:"
echo "cd ${MODDIR} && kvm -display none -serial stdio -kernel kernel -append \"console=tty00 rootdevname=c0d0p1\" -initrd \"${mods}\" -hda `pwd`/${IMG}"
echo "cd ${MODDIR} && qemu-system-i386 -display none -serial stdio -kernel kernel -append \"console=tty00 rootdevname=c0d0p1\" -initrd \"${mods}\" -hda `pwd`/${IMG} --enable-kvm"
fi