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, but use 2GiB images for beaglebone
16 SDIMG_SIZE ?= "444"
17 SDIMG_SIZE_beaglebone = "222"
19 BOOTPARTNAME_beaglebone = "BEAGLE_BONE"
20 BOOTPARTNAME ?= "${MACHINE}"
22 IMAGE_CMD_sdimg () {
23 SDIMG=${WORKDIR}/sd.img
25 # sanity check fstab entry for boot partition mounting
26 if [ "x$(cat /etc/fstab | grep ${LOOPDEV_BOOT} | grep ${WORKDIR}/tmp-mnt-boot | grep user || true)" = "x" ]; then
27 echo "/etc/fstab entries need to be created with the user flag for the loop devices like:"
28 echo "${LOOPDEV_BOOT} ${WORKDIR}/tmp-mnt-boot msdos user 0 0"
29 false
30 fi
32 # cleanup loops
33 for loop in ${LOOPDEV} ${LOOPDEV_BOOT} ${LOOPDEV_FS} ; do
34 ${LOSETUP} -d $loop || true
35 done
37 # If an SD image is already present, reuse and reformat it
38 if [ ! -e ${SDIMG} ] ; then
39 dd if=/dev/zero of=${SDIMG} bs=$(echo '255 * 63 * 512' | bc) count=${SDIMG_SIZE}
40 fi
42 ${LOSETUP} ${LOOPDEV} ${SDIMG}
44 # Create partition table
45 dd if=/dev/zero of=${LOOPDEV} bs=1024 count=1024
46 SIZE=$(/sbin/fdisk -l ${LOOPDEV} | grep Disk | grep bytes | awk '{print $5}')
47 CYLINDERS=$(echo $SIZE/255/63/512 | bc)
48 {
49 echo ,9,0x0C,*
50 echo ,,,-
51 } | /sbin/sfdisk -D -H 255 -S 63 -C ${CYLINDERS} ${LOOPDEV}
53 # Prepare loop devices for boot and filesystem partitions
54 BOOT_OFFSET=32256
55 FS_OFFSET_SECT=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /"|cut -d " " -f 2)
56 FS_OFFSET=$(echo "$FS_OFFSET_SECT * 512" | bc)
57 FS_SIZE_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /g" \
58 |cut -d " " -f 4 | cut -d "+" -f 1)
60 LOOPDEV_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep FAT | perl -p -i -e "s/\s+/ /g"|cut -d " " -f 5)
61 LOOPDEV_BYTES=$(echo "$LOOPDEV_BLOCKS * 1024" | bc)
63 ${LOSETUP} -d ${LOOPDEV}
65 ${LOSETUP} ${LOOPDEV_BOOT} ${SDIMG} -o ${BOOT_OFFSET}
67 /sbin/mkfs.msdos ${LOOPDEV_BOOT} -n ${BOOTPARTNAME} $LOOPDEV_BLOCKS
69 # Prepare filesystem partition
70 # Copy ubi used by flashing scripts
71 if [ -e ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ] ; then
72 echo "Copying UBIFS image to file system"
73 cp ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ${IMAGE_ROOTFS}/boot/fs.ubi
74 fi
76 # Prepare boot partion. First mount the boot partition, and copy the boot loader and supporting files
77 # from the root filesystem
79 mkdir -p ${WORKDIR}/tmp-mnt-boot
80 mount $LOOPDEV_BOOT ${WORKDIR}/tmp-mnt-boot
82 echo "Copying bootloaders into the boot partition"
83 if [ -e ${IMAGE_ROOTFS}/boot/MLO ] ; then
84 cp -v ${IMAGE_ROOTFS}/boot/MLO ${WORKDIR}/tmp-mnt-boot
85 else
86 cp -v ${DEPLOY_DIR_IMAGE}/MLO ${WORKDIR}/tmp-mnt-boot
87 fi
89 # Check for u-boot SPL
90 if [ -e ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.img ] ; then
91 suffix=img
92 else
93 suffix=bin
94 fi
96 cp -v ${IMAGE_ROOTFS}/boot/uEnv.txt ${WORKDIR}/tmp-mnt-boot || true
97 cp -v ${IMAGE_ROOTFS}/boot/user.txt ${WORKDIR}/tmp-mnt-boot || true
99 if [ -e ${IMAGE_ROOTFS}/boot/u-boot.$suffix ] ; then
100 cp -v ${IMAGE_ROOTFS}/boot/{u-boot.$suffix} ${WORKDIR}/tmp-mnt-boot || true
101 else
102 cp -v ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.$suffix ${WORKDIR}/tmp-mnt-boot/u-boot.$suffix
103 fi
105 # Cleanup VFAT mount
106 echo "Cleaning up VFAT mount"
107 umount ${WORKDIR}/tmp-mnt-boot
108 ${LOSETUP} -d ${LOOPDEV_BOOT} || true
110 # Prepare ext3 parition
111 echo "Creating ext3 loopback"
112 ${LOSETUP} ${LOOPDEV_FS} ${SDIMG} -o ${FS_OFFSET}
114 # should use fdisk info
115 echo "Creating ext3 image"
116 touch ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
117 # lots of small files, so use 8k per inode, not 64k
118 genext2fs -i 8192 -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
119 tune2fs -L ${IMAGE_NAME} -j ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
121 dd if=${WORKDIR}/${IMAGE_NAME}.rootfs.ext3 of=${LOOPDEV_FS}
123 ${LOSETUP} -d ${LOOPDEV_FS} || true
125 gzip -c ${WORKDIR}/sd.img > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}-${PR}.img.gz
126 rm -f ${WORKDIR}/sd.img
127 }