1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
inherit image
# Add the fstypes we need
IMAGE_FSTYPES_append = " tar.bz2 sdimg"
# Ensure required utilities are present
IMAGE_DEPENDS_sdimg = "genext2fs-native e2fsprogs-native"
# Change this to match your host distro
LOSETUP ?= "/sbin/losetup"
# Since these need to go in /etc/fstab we can hardcode them
# Since the vars are weakly assigned, you can override them from your local.conf
LOOPDEV ?= "/dev/loop1"
LOOPDEV_BOOT ?= "/dev/loop2"
LOOPDEV_FS ?= "/dev/loop3"
# Default to 4GiB images
SDIMG_SIZE ?= "444"
# FS type for rootfs
ROOTFSTYPE ?= "ext4"
BOOTPARTNAME_beaglebone = "BEAGLE_BONE"
BOOTPARTNAME ?= "${MACHINE}"
IMAGEDATESTAMP = "${@time.strftime('%Y.%m.%d',time.gmtime())}"
# Files and/or directories to be copied into the vfat partition
FATPAYLOAD ?= ""
IMAGE_CMD_sdimg () {
SDIMG=${WORKDIR}/sd.img
# sanity check fstab entry for boot partition mounting
if [ "x$(cat /etc/fstab | grep ${LOOPDEV_BOOT} | grep ${WORKDIR}/tmp-mnt-boot | grep user || true)" = "x" ]; then
echo "/etc/fstab entries need to be created with the user flag for the loop devices like:"
echo "${LOOPDEV_BOOT} ${WORKDIR}/tmp-mnt-boot vfat user 0 0"
false
fi
# cleanup loops
for loop in ${LOOPDEV} ${LOOPDEV_BOOT} ${LOOPDEV_FS} ; do
${LOSETUP} -d $loop || true
done
# If an SD image is already present, reuse and reformat it
if [ ! -e ${SDIMG} ] ; then
dd if=/dev/zero of=${SDIMG} bs=$(echo '255 * 63 * 512' | bc) count=${SDIMG_SIZE}
fi
${LOSETUP} ${LOOPDEV} ${SDIMG}
# Create partition table
dd if=/dev/zero of=${LOOPDEV} bs=1024 count=1024
SIZE=$(/sbin/fdisk -l ${LOOPDEV} | grep Disk | grep bytes | awk '{print $5}')
CYLINDERS=$(echo $SIZE/255/63/512 | bc)
{
echo ,9,0x0C,*
echo ,,,-
} | /sbin/sfdisk -D -H 255 -S 63 -C ${CYLINDERS} ${LOOPDEV}
# Prepare loop devices for boot and filesystem partitions
BOOT_OFFSET=32256
FS_OFFSET_SECT=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /"|cut -d " " -f 2)
FS_OFFSET=$(echo "$FS_OFFSET_SECT * 512" | bc)
FS_SIZE_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /g" \
|cut -d " " -f 4 | cut -d "+" -f 1)
LOOPDEV_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep FAT | perl -p -i -e "s/\s+/ /g"|cut -d " " -f 5)
LOOPDEV_BYTES=$(echo "$LOOPDEV_BLOCKS * 1024" | bc)
${LOSETUP} -d ${LOOPDEV}
${LOSETUP} ${LOOPDEV_BOOT} ${SDIMG} -o ${BOOT_OFFSET}
/sbin/mkfs.vfat ${LOOPDEV_BOOT} -n ${BOOTPARTNAME} $LOOPDEV_BLOCKS
# Prepare filesystem partition
# Copy ubi used by flashing scripts
if [ -e ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ] ; then
echo "Copying UBIFS image to file system"
cp ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ${IMAGE_ROOTFS}/boot/fs.ubi
fi
# Prepare boot partion. First mount the boot partition, and copy the boot loader and supporting files
# from the root filesystem
mkdir -p ${WORKDIR}/tmp-mnt-boot
mount $LOOPDEV_BOOT ${WORKDIR}/tmp-mnt-boot
echo "Copying bootloaders into the boot partition"
if [ -e ${IMAGE_ROOTFS}/boot/MLO ] ; then
cp -v ${IMAGE_ROOTFS}/boot/MLO ${WORKDIR}/tmp-mnt-boot
else
cp -v ${DEPLOY_DIR_IMAGE}/MLO ${WORKDIR}/tmp-mnt-boot
fi
# Check for u-boot SPL
if [ -e ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.img ] ; then
suffix=img
else
suffix=bin
fi
cp -v ${IMAGE_ROOTFS}/boot/uEnv.txt ${WORKDIR}/tmp-mnt-boot || true
cp -v ${IMAGE_ROOTFS}/boot/user.txt ${WORKDIR}/tmp-mnt-boot || true
cp -v ${IMAGE_ROOTFS}/boot/uImage ${WORKDIR}/tmp-mnt-boot || true
if [ -e ${IMAGE_ROOTFS}/boot/u-boot.$suffix ] ; then
cp -v ${IMAGE_ROOTFS}/boot/{u-boot.$suffix} ${WORKDIR}/tmp-mnt-boot || true
else
cp -v ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.$suffix ${WORKDIR}/tmp-mnt-boot/u-boot.$suffix
fi
if [ -n ${FATPAYLOAD} ] ; then
echo "Copying payload into VFAT"
for entry in ${FATPAYLOAD} ; do
# add the || true to stop aborting on vfat issues like not supporting .~lock files
cp -av ${IMAGE_ROOTFS}$entry ${WORKDIR}/tmp-mnt-boot || true
done
fi
echo "${IMAGE_NAME}-${IMAGEDATESTAMP}" > ${IMAGE_ROOTFS}/etc/image-version-info
# Cleanup VFAT mount
echo "Cleaning up VFAT mount"
umount ${WORKDIR}/tmp-mnt-boot
${LOSETUP} -d ${LOOPDEV_BOOT} || true
# Prepare rootfs parition
echo "Creating rootfs loopback"
${LOSETUP} ${LOOPDEV_FS} ${SDIMG} -o ${FS_OFFSET}
FS_NUM_INODES=$(echo $FS_SIZE_BLOCKS / 4 | bc)
case "${ROOTFSTYPE}" in
ext3)
genext2fs -z -N $FS_NUM_INODES -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${LOOPDEV_FS}
tune2fs -L ${IMAGE_NAME} -j ${LOOPDEV_FS}
;;
ext4)
genext2fs -z -N $FS_NUM_INODES -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${LOOPDEV_FS}
tune2fs -L ${IMAGE_NAME} -j -O extents,uninit_bg,dir_index ${LOOPDEV_FS}
;;
*)
echo "Please set ROOTFSTYPE to something supported"
exit 1
;;
esac
${LOSETUP} -d ${LOOPDEV_FS} || true
gzip -c ${WORKDIR}/sd.img > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}-${IMAGEDATESTAMP}.img.gz
rm -f ${WORKDIR}/sd.img
}
|
