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-rw-r--r--meta-agl-bsp/classes/image-vm.bbclass181
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
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--- /dev/null
+++ b/meta-agl-bsp/classes/image-vm.bbclass
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+# 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"