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 ?= "${MACHINE}"
21 IMAGE_CMD_sdimg () {
22 SDIMG=${WORKDIR}/sd.img
24 # sanity check fstab entry for boot partition mounting
25 if [ "x$(cat /etc/fstab | grep ${LOOPDEV_BOOT} | grep ${WORKDIR}/tmp-mnt-boot | grep user || true)" = "x" ]; then
26 echo "/etc/fstab entries need to be created with the user flag for the loop devices like:"
27 echo "${LOOPDEV_BOOT} ${WORKDIR}/tmp-mnt-boot msdos user 0 0"
28 false
29 fi
31 # cleanup loops
32 for loop in ${LOOPDEV} ${LOOPDEV_BOOT} ${LOOPDEV_FS} ; do
33 ${LOSETUP} -d $loop || true
34 done
36 # If an SD image is already present, reuse and reformat it
37 if [ ! -e ${SDIMG} ] ; then
38 dd if=/dev/zero of=${SDIMG} bs=$(echo '255 * 63 * 512' | bc) count=${SDIMG_SIZE}
39 fi
41 ${LOSETUP} ${LOOPDEV} ${SDIMG}
43 # Create partition table
44 dd if=/dev/zero of=${LOOPDEV} bs=1024 count=1024
45 SIZE=$(/sbin/fdisk -l ${LOOPDEV} | grep Disk | grep bytes | awk '{print $5}')
46 CYLINDERS=$(echo $SIZE/255/63/512 | bc)
47 {
48 echo ,9,0x0C,*
49 echo ,,,-
50 } | /sbin/sfdisk -D -H 255 -S 63 -C ${CYLINDERS} ${LOOPDEV}
52 # Prepare loop devices for boot and filesystem partitions
53 BOOT_OFFSET=32256
54 FS_OFFSET_SECT=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /"|cut -d " " -f 2)
55 FS_OFFSET=$(echo "$FS_OFFSET_SECT * 512" | bc)
56 FS_SIZE_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /g" \
57 |cut -d " " -f 4 | cut -d "+" -f 1)
59 LOOPDEV_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep FAT | perl -p -i -e "s/\s+/ /g"|cut -d " " -f 5)
60 LOOPDEV_BYTES=$(echo "$LOOPDEV_BLOCKS * 1024" | bc)
62 ${LOSETUP} -d ${LOOPDEV}
64 ${LOSETUP} ${LOOPDEV_BOOT} ${SDIMG} -o ${BOOT_OFFSET}
66 /sbin/mkfs.msdos ${LOOPDEV_BOOT} -n ${BOOTPARTNAME} $LOOPDEV_BLOCKS
68 # Prepare filesystem partition
69 # Copy ubi used by flashing scripts
70 if [ -e ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ] ; then
71 echo "Copying UBIFS image to file system"
72 cp ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ${IMAGE_ROOTFS}/boot/fs.ubi
73 fi
75 # Prepare boot partion. First mount the boot partition, and copy the boot loader and supporting files
76 # from the root filesystem
78 mkdir -p ${WORKDIR}/tmp-mnt-boot
79 mount $LOOPDEV_BOOT ${WORKDIR}/tmp-mnt-boot
81 echo "Copying bootloaders into the boot partition"
82 if [ -e ${IMAGE_ROOTFS}/boot/MLO ] ; then
83 cp -v ${IMAGE_ROOTFS}/boot/MLO ${WORKDIR}/tmp-mnt-boot
84 else
85 cp -v ${DEPLOY_DIR_IMAGE}/MLO ${WORKDIR}/tmp-mnt-boot
86 fi
88 # Check for u-boot SPL
89 if [ -e ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.img ] ; then
90 suffix=img
91 else
92 suffix=bin
93 fi
95 cp -v ${IMAGE_ROOTFS}/boot/{user.txt,uEnv.txt} ${WORKDIR}/tmp-mnt-boot || true
97 if [ -e ${IMAGE_ROOTFS}/boot/u-boot.$suffix ] ; then
98 cp -v ${IMAGE_ROOTFS}/boot/{u-boot.$suffix} ${WORKDIR}/tmp-mnt-boot || true
99 else
100 cp -v ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.$suffix ${WORKDIR}/tmp-mnt-boot/u-boot.$suffix
101 fi
103 # Cleanup VFAT mount
104 echo "Cleaning up VFAT mount"
105 umount ${WORKDIR}/tmp-mnt-boot
106 ${LOSETUP} -d ${LOOPDEV_BOOT} || true
108 # Prepare ext3 parition
109 echo "Creating ext3 loopback"
110 ${LOSETUP} ${LOOPDEV_FS} ${SDIMG} -o ${FS_OFFSET}
112 # should use fdisk info
113 echo "Creating ext3 image"
114 touch ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
115 genext2fs -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
116 tune2fs -L ${IMAGE_NAME} -j ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
118 dd if=${WORKDIR}/${IMAGE_NAME}.rootfs.ext3 of=${LOOPDEV_FS}
120 ${LOSETUP} -d ${LOOPDEV_FS} || true
122 gzip -c ${WORKDIR}/sd.img > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}-${PR}.img.gz
123 rm -f ${WORKDIR}/sd.img
124 }