diff options
Diffstat (limited to 'import-layers/yocto-poky/meta/classes/image-vm.bbclass')
| -rw-r--r-- | import-layers/yocto-poky/meta/classes/image-vm.bbclass | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/import-layers/yocto-poky/meta/classes/image-vm.bbclass b/import-layers/yocto-poky/meta/classes/image-vm.bbclass new file mode 100644 index 000000000..47f73261f --- /dev/null +++ b/import-layers/yocto-poky/meta/classes/image-vm.bbclass @@ -0,0 +1,175 @@ +# 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 \ + ${PN}:do_image_ext4 \ + " + +IMAGE_TYPEDEP_vmdk = "ext4" +IMAGE_TYPEDEP_vdi = "ext4" +IMAGE_TYPEDEP_qcow2 = "ext4" +IMAGE_TYPEDEP_hdddirect = "ext4" +IMAGE_TYPES_MASKED += "vmdk vdi qcow2 hdddirect" + +ROOTFS ?= "${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.ext4" + +# Used by bootloader +LABELS_VM ?= "boot" +ROOT_VM ?= "root=/dev/sda2" +# Using an initramfs is optional. Enable it by setting INITRD_IMAGE_VM. +INITRD_IMAGE_VM ?= "" +INITRD_VM ?= "${@'${DEPLOY_DIR_IMAGE}/${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=${DEPLOY_DIR_IMAGE}/${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 + ${BOOTDD_EXTRA_SPACE}` + + # Ensure total sectors is an integral number of sectors per + # track or mcopy will complain. Sectors are 512 bytes, and we + # generate images with 32 sectors per track. This calculation is + # done in blocks, thus the mod by 16 instead of 32. + BLOCKS=$(expr $BLOCKS + $(expr 16 - $(expr $BLOCKS % 16))) + + # 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 ${DEPLOY_DIR_IMAGE} + rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hdddirect + ln -s ${IMAGE_NAME}.hdddirect ${DEPLOY_DIR_IMAGE}/${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 ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hdddirect ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.$type + ln -sf ${IMAGE_NAME}.$type ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.$type +} +create_vmdk_image () { + run_qemu_img vmdk +} + +create_vdi_image () { + run_qemu_img vdi +} + +create_qcow2_image () { + run_qemu_img qcow2 +} + +python do_vmimg() { + if 'vmdk' in d.getVar('IMAGE_FSTYPES', True): + 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" |
