2 # (loosly based off image-live.bbclass Copyright (C) 2004, Advanced Micro Devices, Inc.)
4 # Create an image which can be placed directly onto a harddisk using dd and then
7 # This uses syslinux. extlinux would have been nice but required the ext2/3
8 # partition to be mounted. grub requires to run itself as part of the install
11 # The end result is a 512 boot sector populated with an MBR and partition table
12 # followed by an msdos fat16 partition containing syslinux and a linux kernel
13 # completed by the ext2/3 rootfs.
15 # We have to push the msdos parition table size > 16MB so fat 16 is used as parted
16 # won't touch fat12 partitions.
18 inherit live-vm-common
20 do_bootdirectdisk[depends] += "dosfstools-native:do_populate_sysroot \
21 virtual/kernel:do_deploy \
22 syslinux:do_populate_sysroot \
23 syslinux-native:do_populate_sysroot \
24 parted-native:do_populate_sysroot \
25 mtools-native:do_populate_sysroot \
26 ${PN}:do_image_${VM_ROOTFS_TYPE} \
29 IMAGE_TYPEDEP_vmdk = "${VM_ROOTFS_TYPE}"
30 IMAGE_TYPEDEP_vmdk.xz = "${VM_ROOTFS_TYPE}"
31 IMAGE_TYPEDEP_vdi = "${VM_ROOTFS_TYPE}"
32 IMAGE_TYPEDEP_qcow2 = "${VM_ROOTFS_TYPE}"
33 IMAGE_TYPEDEP_hdddirect = "${VM_ROOTFS_TYPE}"
34 IMAGE_TYPES_MASKED += "vmdk vmdk.xz vdi qcow2 hdddirect"
36 VM_ROOTFS_TYPE ?= "ext4"
37 ROOTFS ?= "${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.${VM_ROOTFS_TYPE}"
41 ROOT_VM ?= "root=/dev/sda2"
42 # Using an initramfs is optional. Enable it by setting INITRD_IMAGE_VM.
44 INITRD_VM ?= "${@'${IMGDEPLOYDIR}/${INITRD_IMAGE_VM}-${MACHINE}.cpio.gz' if '${INITRD_IMAGE_VM}' else ''}"
45 do_bootdirectdisk[depends] += "${@'${INITRD_IMAGE_VM}:do_image_complete' if '${INITRD_IMAGE_VM}' else ''}"
47 BOOTDD_VOLUME_ID ?= "boot"
48 BOOTDD_EXTRA_SPACE ?= "16384"
50 DISK_SIGNATURE ?= "${DISK_SIGNATURE_GENERATED}"
51 DISK_SIGNATURE[vardepsexclude] = "DISK_SIGNATURE_GENERATED"
54 HDDDIR="${S}/hdd/boot"
55 HDDIMG="${S}/hdd.image"
56 IMAGE=${IMGDEPLOYDIR}/${IMAGE_NAME}.hdddirect
58 populate_kernel $HDDDIR
60 if [ "${PCBIOS}" = "1" ]; then
61 syslinux_hddimg_populate $HDDDIR
63 if [ "${EFI}" = "1" ]; then
64 efi_hddimg_populate $HDDDIR
67 BLOCKS=`du -bks $HDDDIR | cut -f 1`
68 BLOCKS=`expr $BLOCKS + ${BOOTDD_EXTRA_SPACE}`
70 # Remove it since mkdosfs would fail when it exists
72 mkdosfs -n ${BOOTDD_VOLUME_ID} -S 512 -C $HDDIMG $BLOCKS
73 mcopy -i $HDDIMG -s $HDDDIR/* ::/
75 if [ "${PCBIOS}" = "1" ]; then
76 syslinux_hdddirect_install $HDDIMG
80 ROOTFSBLOCKS=`du -Lbks ${ROOTFS} | cut -f 1`
81 TOTALSIZE=`expr $BLOCKS + $ROOTFSBLOCKS`
82 END1=`expr $BLOCKS \* 1024`
83 END2=`expr $END1 + 512`
84 END3=`expr \( $ROOTFSBLOCKS \* 1024 \) + $END1`
86 echo $ROOTFSBLOCKS $TOTALSIZE $END1 $END2 $END3
88 dd if=/dev/zero of=$IMAGE bs=1024 seek=$TOTALSIZE count=1
90 parted $IMAGE mklabel msdos
91 parted $IMAGE mkpart primary fat16 0 ${END1}B
92 parted $IMAGE unit B mkpart primary ext2 ${END2}B ${END3}B
93 parted $IMAGE set 1 boot on
97 awk "BEGIN { printf \"$(echo ${DISK_SIGNATURE} | sed 's/\(..\)\(..\)\(..\)\(..\)/\\x\4\\x\3\\x\2\\x\1/')\" }" | \
98 dd of=$IMAGE bs=1 seek=440 conv=notrunc
100 OFFSET=`expr $END2 / 512`
101 if [ "${PCBIOS}" = "1" ]; then
102 dd if=${STAGING_DATADIR}/syslinux/mbr.bin of=$IMAGE conv=notrunc
105 dd if=$HDDIMG of=$IMAGE conv=notrunc seek=1 bs=512
106 dd if=${ROOTFS} of=$IMAGE conv=notrunc seek=$OFFSET bs=512
110 ln -sf ${IMAGE_NAME}.hdddirect ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.hdddirect
113 python do_bootdirectdisk() {
114 validate_disk_signature(d)
115 set_live_vm_vars(d, 'VM')
116 if d.getVar("PCBIOS") == "1":
117 bb.build.exec_func('build_syslinux_cfg', d)
118 if d.getVar("EFI") == "1":
119 bb.build.exec_func('build_efi_cfg', d)
120 bb.build.exec_func('build_boot_dd', d)
123 def generate_disk_signature():
126 signature = str(uuid.uuid4())[:8]
128 if signature != '00000000':
133 def validate_disk_signature(d):
136 disk_signature = d.getVar("DISK_SIGNATURE")
138 if not re.match(r'^[0-9a-fA-F]{8}$', disk_signature):
139 bb.fatal("DISK_SIGNATURE '%s' must be an 8 digit hex string" % disk_signature)
141 DISK_SIGNATURE_GENERATED := "${@generate_disk_signature()}"
145 qemu-img convert -O $type ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.hdddirect ${IMGDEPLOYDIR}/${IMAGE_NAME}.$type
147 ln -sf ${IMAGE_NAME}.$type ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.$type
149 create_vmdk_image () {
153 create_vmdkxz_image () {
155 xz -f ${XZ_COMPRESSION_LEVEL} ${XZ_THREADS} --check=${XZ_INTEGRITY_CHECK} ${IMGDEPLOYDIR}/${IMAGE_NAME}.vmdk
156 ln -sf ${IMAGE_NAME}.vmdk.xz ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.vmdk.xz
157 rm -f ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.vmdk
160 create_vdi_image () {
164 create_qcow2_image () {
169 if bb.utils.contains('IMAGE_FSTYPES', 'vmdk.xz', True, False, d):
170 bb.build.exec_func('create_vmdkxz_image', d)
171 if bb.utils.contains('IMAGE_FSTYPES', 'vmdk', True, False, d):
172 bb.build.exec_func('create_vmdk_image', d)
173 if 'vdi' in d.getVar('IMAGE_FSTYPES', True):
174 bb.build.exec_func('create_vdi_image', d)
175 if 'qcow2' in d.getVar('IMAGE_FSTYPES', True):
176 bb.build.exec_func('create_qcow2_image', d)
179 addtask bootdirectdisk before do_vmimg
180 addtask vmimg after do_bootdirectdisk before do_image_complete
181 do_vmimg[depends] += "qemu-native:do_populate_sysroot"