1 inherit image
3 # Add the fstypes we need
4 IMAGE_FSTYPES_append = " tar.bz2 sdimg"
6 # Change this to match your host distro
7 LOSETUP ?= "/sbin/losetup"
9 # Since these need to go in /etc/fstab we can hardcode them
10 # Since the vars are weakly assigned, you can override them from your local.conf
11 LOOPDEV ?= "/dev/loop1"
12 LOOPDEV_BOOT ?= "/dev/loop2"
13 LOOPDEV_FS ?= "/dev/loop3"
15 # Default to 4GiB images
16 SDIMG_SIZE ?= "444"
18 # FS type for rootfs
19 ROOTFSTYPE ?= "ext3"
21 BOOTPARTNAME_beaglebone = "BEAGLE_BONE"
22 BOOTPARTNAME ?= "${MACHINE}"
24 IMAGEDATESTAMP = "${@time.strftime('%Y.%m.%d',time.gmtime())}"
26 # Files and/or directories to be copied into the vfat partition
27 FATPAYLOAD ?= ""
29 IMAGE_CMD_sdimg () {
30 SDIMG=${WORKDIR}/sd.img
32 # sanity check fstab entry for boot partition mounting
33 if [ "x$(cat /etc/fstab | grep ${LOOPDEV_BOOT} | grep ${WORKDIR}/tmp-mnt-boot | grep user || true)" = "x" ]; then
34 echo "/etc/fstab entries need to be created with the user flag for the loop devices like:"
35 echo "${LOOPDEV_BOOT} ${WORKDIR}/tmp-mnt-boot vfat user 0 0"
36 false
37 fi
39 # cleanup loops
40 for loop in ${LOOPDEV} ${LOOPDEV_BOOT} ${LOOPDEV_FS} ; do
41 ${LOSETUP} -d $loop || true
42 done
44 # If an SD image is already present, reuse and reformat it
45 if [ ! -e ${SDIMG} ] ; then
46 dd if=/dev/zero of=${SDIMG} bs=$(echo '255 * 63 * 512' | bc) count=${SDIMG_SIZE}
47 fi
49 ${LOSETUP} ${LOOPDEV} ${SDIMG}
51 # Create partition table
52 dd if=/dev/zero of=${LOOPDEV} bs=1024 count=1024
53 SIZE=$(/sbin/fdisk -l ${LOOPDEV} | grep Disk | grep bytes | awk '{print $5}')
54 CYLINDERS=$(echo $SIZE/255/63/512 | bc)
55 {
56 echo ,9,0x0C,*
57 echo ,,,-
58 } | /sbin/sfdisk -D -H 255 -S 63 -C ${CYLINDERS} ${LOOPDEV}
60 # Prepare loop devices for boot and filesystem partitions
61 BOOT_OFFSET=32256
62 FS_OFFSET_SECT=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /"|cut -d " " -f 2)
63 FS_OFFSET=$(echo "$FS_OFFSET_SECT * 512" | bc)
64 FS_SIZE_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /g" \
65 |cut -d " " -f 4 | cut -d "+" -f 1)
67 LOOPDEV_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep FAT | perl -p -i -e "s/\s+/ /g"|cut -d " " -f 5)
68 LOOPDEV_BYTES=$(echo "$LOOPDEV_BLOCKS * 1024" | bc)
70 ${LOSETUP} -d ${LOOPDEV}
72 ${LOSETUP} ${LOOPDEV_BOOT} ${SDIMG} -o ${BOOT_OFFSET}
74 /sbin/mkfs.vfat ${LOOPDEV_BOOT} -n ${BOOTPARTNAME} $LOOPDEV_BLOCKS
76 # Prepare filesystem partition
77 # Copy ubi used by flashing scripts
78 if [ -e ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ] ; then
79 echo "Copying UBIFS image to file system"
80 cp ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ${IMAGE_ROOTFS}/boot/fs.ubi
81 fi
83 # Prepare boot partion. First mount the boot partition, and copy the boot loader and supporting files
84 # from the root filesystem
86 mkdir -p ${WORKDIR}/tmp-mnt-boot
87 mount $LOOPDEV_BOOT ${WORKDIR}/tmp-mnt-boot
89 echo "Copying bootloaders into the boot partition"
90 if [ -e ${IMAGE_ROOTFS}/boot/MLO ] ; then
91 cp -v ${IMAGE_ROOTFS}/boot/MLO ${WORKDIR}/tmp-mnt-boot
92 else
93 cp -v ${DEPLOY_DIR_IMAGE}/MLO ${WORKDIR}/tmp-mnt-boot
94 fi
96 # Check for u-boot SPL
97 if [ -e ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.img ] ; then
98 suffix=img
99 else
100 suffix=bin
101 fi
103 cp -v ${IMAGE_ROOTFS}/boot/uEnv.txt ${WORKDIR}/tmp-mnt-boot || true
104 cp -v ${IMAGE_ROOTFS}/boot/user.txt ${WORKDIR}/tmp-mnt-boot || true
106 if [ -e ${IMAGE_ROOTFS}/boot/u-boot.$suffix ] ; then
107 cp -v ${IMAGE_ROOTFS}/boot/{u-boot.$suffix} ${WORKDIR}/tmp-mnt-boot || true
108 else
109 cp -v ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.$suffix ${WORKDIR}/tmp-mnt-boot/u-boot.$suffix
110 fi
112 if [ -n ${FATPAYLOAD} ] ; then
113 echo "Copying payload into VFAT"
114 for entry in ${FATPAYLOAD} ; do
115 # add the || true to stop aborting on vfat issues like not supporting .~lock files
116 cp -av ${IMAGE_ROOTFS}$entry ${WORKDIR}/tmp-mnt-boot || true
117 done
118 fi
120 # Cleanup VFAT mount
121 echo "Cleaning up VFAT mount"
122 umount ${WORKDIR}/tmp-mnt-boot
123 ${LOSETUP} -d ${LOOPDEV_BOOT} || true
125 # Prepare rootfs parition
126 echo "Creating rootfs loopback"
127 ${LOSETUP} ${LOOPDEV_FS} ${SDIMG} -o ${FS_OFFSET}
129 # should use fdisk info
130 echo "Creating rootfs image"
131 touch ${WORKDIR}/${IMAGE_NAME}.rootfs.img
133 FS_NUM_INODES=$(echo $FS_SIZE_BLOCKS / 4 | bc)
135 case "${ROOTFSTYPE}" in
136 ext3)
137 genext2fs -z -N $FS_NUM_INODES -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${WORKDIR}/${IMAGE_NAME}.rootfs.img
138 tune2fs -L ${IMAGE_NAME} -j ${WORKDIR}/${IMAGE_NAME}.rootfs.img
139 ;;
140 ext4)
141 genext2fs -z -N $FS_NUM_INODES -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${WORKDIR}/${IMAGE_NAME}.rootfs.img
142 tune2fs -L ${IMAGE_NAME} -j -O extents,uninit_bg,dir_index ${WORKDIR}/${IMAGE_NAME}.rootfs.img
143 ;;
144 *)
145 echo "Please set ROOTFSTYPE to something supported"
146 exit 1
147 ;;
148 esac
150 dd if=${WORKDIR}/${IMAGE_NAME}.rootfs.img of=${LOOPDEV_FS}
152 ${LOSETUP} -d ${LOOPDEV_FS} || true
154 gzip -c ${WORKDIR}/sd.img > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}-${IMAGEDATESTAMP}.img.gz
155 rm -f ${WORKDIR}/sd.img
156 }