diff options
| -rw-r--r-- | meta-agl-bsp/classes/image-vm.bbclass | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/meta-agl-bsp/classes/image-vm.bbclass b/meta-agl-bsp/classes/image-vm.bbclass new file mode 100644 index 000000000..be4159e02 --- /dev/null +++ b/meta-agl-bsp/classes/image-vm.bbclass @@ -0,0 +1,181 @@ +# image-vm.bbclass +# (loosly based off image-live.bbclass Copyright (C) 2004, Advanced Micro Devices, Inc.) +# +# Create an image which can be placed directly onto a harddisk using dd and then +# booted. +# +# This uses syslinux. extlinux would have been nice but required the ext2/3 +# partition to be mounted. grub requires to run itself as part of the install +# process. +# +# The end result is a 512 boot sector populated with an MBR and partition table +# followed by an msdos fat16 partition containing syslinux and a linux kernel +# completed by the ext2/3 rootfs. +# +# We have to push the msdos parition table size > 16MB so fat 16 is used as parted +# won't touch fat12 partitions. + +inherit live-vm-common + +do_bootdirectdisk[depends] += "dosfstools-native:do_populate_sysroot \ + virtual/kernel:do_deploy \ + syslinux:do_populate_sysroot \ + syslinux-native:do_populate_sysroot \ + parted-native:do_populate_sysroot \ + mtools-native:do_populate_sysroot \ + ${PN}:do_image_${VM_ROOTFS_TYPE} \ + " + +IMAGE_TYPEDEP_vmdk = "${VM_ROOTFS_TYPE}" +IMAGE_TYPEDEP_vmdk.xz = "${VM_ROOTFS_TYPE}" +IMAGE_TYPEDEP_vdi = "${VM_ROOTFS_TYPE}" +IMAGE_TYPEDEP_qcow2 = "${VM_ROOTFS_TYPE}" +IMAGE_TYPEDEP_hdddirect = "${VM_ROOTFS_TYPE}" +IMAGE_TYPES_MASKED += "vmdk vmdk.xz vdi qcow2 hdddirect" + +VM_ROOTFS_TYPE ?= "ext4" +ROOTFS ?= "${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.${VM_ROOTFS_TYPE}" + +# Used by bootloader +LABELS_VM ?= "boot" +ROOT_VM ?= "root=/dev/sda2" +# Using an initramfs is optional. Enable it by setting INITRD_IMAGE_VM. +INITRD_IMAGE_VM ?= "" +INITRD_VM ?= "${@'${IMGDEPLOYDIR}/${INITRD_IMAGE_VM}-${MACHINE}.cpio.gz' if '${INITRD_IMAGE_VM}' else ''}" +do_bootdirectdisk[depends] += "${@'${INITRD_IMAGE_VM}:do_image_complete' if '${INITRD_IMAGE_VM}' else ''}" + +BOOTDD_VOLUME_ID ?= "boot" +BOOTDD_EXTRA_SPACE ?= "16384" + +DISK_SIGNATURE ?= "${DISK_SIGNATURE_GENERATED}" +DISK_SIGNATURE[vardepsexclude] = "DISK_SIGNATURE_GENERATED" + +build_boot_dd() { + HDDDIR="${S}/hdd/boot" + HDDIMG="${S}/hdd.image" + IMAGE=${IMGDEPLOYDIR}/${IMAGE_NAME}.hdddirect + + populate_kernel $HDDDIR + + if [ "${PCBIOS}" = "1" ]; then + syslinux_hddimg_populate $HDDDIR + fi + if [ "${EFI}" = "1" ]; then + efi_hddimg_populate $HDDDIR + fi + + BLOCKS=`du -bks $HDDDIR | cut -f 1` + BLOCKS=`expr $BLOCKS + ${BOOTDD_EXTRA_SPACE}` + + # Remove it since mkdosfs would fail when it exists + rm -f $HDDIMG + mkdosfs -n ${BOOTDD_VOLUME_ID} -S 512 -C $HDDIMG $BLOCKS + mcopy -i $HDDIMG -s $HDDDIR/* ::/ + + if [ "${PCBIOS}" = "1" ]; then + syslinux_hdddirect_install $HDDIMG + fi + chmod 644 $HDDIMG + + ROOTFSBLOCKS=`du -Lbks ${ROOTFS} | cut -f 1` + TOTALSIZE=`expr $BLOCKS + $ROOTFSBLOCKS` + END1=`expr $BLOCKS \* 1024` + END2=`expr $END1 + 512` + END3=`expr \( $ROOTFSBLOCKS \* 1024 \) + $END1` + + echo $ROOTFSBLOCKS $TOTALSIZE $END1 $END2 $END3 + rm -rf $IMAGE + dd if=/dev/zero of=$IMAGE bs=1024 seek=$TOTALSIZE count=1 + + parted $IMAGE mklabel msdos + parted $IMAGE mkpart primary fat16 0 ${END1}B + parted $IMAGE unit B mkpart primary ext2 ${END2}B ${END3}B + parted $IMAGE set 1 boot on + + parted $IMAGE print + + awk "BEGIN { printf \"$(echo ${DISK_SIGNATURE} | fold -w 2 | tac | paste -sd '' | sed 's/\(..\)/\\x&/g')\" }" | \ + dd of=$IMAGE bs=1 seek=440 conv=notrunc + + OFFSET=`expr $END2 / 512` + if [ "${PCBIOS}" = "1" ]; then + dd if=${STAGING_DATADIR}/syslinux/mbr.bin of=$IMAGE conv=notrunc + fi + + dd if=$HDDIMG of=$IMAGE conv=notrunc seek=1 bs=512 + dd if=${ROOTFS} of=$IMAGE conv=notrunc seek=$OFFSET bs=512 + + cd ${IMGDEPLOYDIR} + + ln -sf ${IMAGE_NAME}.hdddirect ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.hdddirect +} + +python do_bootdirectdisk() { + validate_disk_signature(d) + set_live_vm_vars(d, 'VM') + if d.getVar("PCBIOS", True) == "1": + bb.build.exec_func('build_syslinux_cfg', d) + if d.getVar("EFI", True) == "1": + bb.build.exec_func('build_efi_cfg', d) + bb.build.exec_func('build_boot_dd', d) +} + +def generate_disk_signature(): + import uuid + + signature = str(uuid.uuid4())[:8] + + if signature != '00000000': + return signature + else: + return 'ffffffff' + +def validate_disk_signature(d): + import re + + disk_signature = d.getVar("DISK_SIGNATURE", True) + + if not re.match(r'^[0-9a-fA-F]{8}$', disk_signature): + bb.fatal("DISK_SIGNATURE '%s' must be an 8 digit hex string" % disk_signature) + +DISK_SIGNATURE_GENERATED := "${@generate_disk_signature()}" + +run_qemu_img (){ + type="$1" + qemu-img convert -O $type ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.hdddirect ${IMGDEPLOYDIR}/${IMAGE_NAME}.$type + + ln -sf ${IMAGE_NAME}.$type ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.$type +} +create_vmdk_image () { + run_qemu_img vmdk +} + +create_vmdkxz_image () { + run_qemu_img vmdk + xz -f ${XZ_COMPRESSION_LEVEL} ${XZ_THREADS} --check=${XZ_INTEGRITY_CHECK} ${IMGDEPLOYDIR}/${IMAGE_NAME}.vmdk + ln -sf ${IMAGE_NAME}.vmdk.xz ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.vmdk.xz + rm -f ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.vmdk +} + +create_vdi_image () { + run_qemu_img vdi +} + +create_qcow2_image () { + run_qemu_img qcow2 +} + +python do_vmimg() { + if bb.utils.contains('IMAGE_FSTYPES', 'vmdk.xz', True, False, d): + bb.build.exec_func('create_vmdkxz_image', d) + if bb.utils.contains('IMAGE_FSTYPES', 'vmdk', True, False, d): + bb.build.exec_func('create_vmdk_image', d) + if 'vdi' in d.getVar('IMAGE_FSTYPES', True): + bb.build.exec_func('create_vdi_image', d) + if 'qcow2' in d.getVar('IMAGE_FSTYPES', True): + bb.build.exec_func('create_qcow2_image', d) +} + +addtask bootdirectdisk before do_vmimg +addtask vmimg after do_bootdirectdisk before do_image_complete +do_vmimg[depends] += "qemu-native:do_populate_sysroot" |