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bootimage.bbclass, zisofs-tools-native: add ability to compress ISO images

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The mkzftree is needed to allow ISO images to be compressed with
minimal runtime overhead.  Below is an example of the savings on a
core-image-minimal.

Before ls -l:
24117248 core-image-minimal-qemux86-64.iso

Using the mkzftree ls -l:
16777216 core-image-minimal-qemux86-64.iso

(From OE-Core rev: 808d4371939ec48ed62e0c0b6614b96d61b1f7b8)

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Reviewed-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Jason Wessel
2013-09-17 13:32:18 +00:00
committed by Richard Purdie
parent 4a0ff9c74d
commit fde2911983
2 changed files with 40 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta/classes/bootimg.bbclass
+21 -3
View File
@@ -19,13 +19,15 @@
# External variables (also used by syslinux.bbclass)
# ${INITRD} - indicates a filesystem image to use as an initrd (optional)
# ${COMPRESSISO} - Transparent compress ISO, reduce size ~40% if set to 1
# ${NOISO} - skip building the ISO image if set to 1
# ${NOHDD} - skip building the HDD image if set to 1
# ${ROOTFS} - indicates a filesystem image to include as the root filesystem (optional)
do_bootimg[depends] += "dosfstools-native:do_populate_sysroot \
mtools-native:do_populate_sysroot \
cdrtools-native:do_populate_sysroot"
cdrtools-native:do_populate_sysroot \
${@oe.utils.ifelse(d.getVar('COMPRESSISO'),'zisofs-tools-native:do_populate_sysroot','')}"
PACKAGES = " "
EXCLUDE_FROM_WORLD = "1"
@@ -33,6 +35,8 @@ EXCLUDE_FROM_WORLD = "1"
HDDDIR = "${S}/hddimg"
ISODIR = "${S}/iso"
EFIIMGDIR = "${S}/efi_img"
COMPACT_ISODIR = "${S}/iso.z"
COMPRESSISO ?= "0"
BOOTIMG_VOLUME_ID ?= "boot"
BOOTIMG_EXTRA_SPACE ?= "512"
@@ -97,18 +101,32 @@ build_iso() {
install -m 0644 ${STAGING_DATADIR}/syslinux/isolinux.bin ${ISODIR}${ISOLINUXDIR}
fi
if [ "${COMPRESSISO}" = "1" ] ; then
# create compact directory, compress iso
mkdir -p ${COMPACT_ISODIR}
mkzftree -z 9 -p 4 -F ${ISODIR}/rootfs.img ${COMPACT_ISODIR}/rootfs.img
# move compact iso to iso, then remove compact directory
mv ${COMPACT_ISODIR}/rootfs.img ${ISODIR}/rootfs.img
rm -Rf ${COMPACT_ISODIR}
mkisofs_compress_opts="-R -z -D -l"
else
mkisofs_compress_opts="-r"
fi
if [ "${PCBIOS}" = "1" ] && [ "${EFI}" != "1" ] ; then
# PCBIOS only media
mkisofs -V ${BOOTIMG_VOLUME_ID} \
-o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
-b ${ISO_BOOTIMG} -c ${ISO_BOOTCAT} -r \
-b ${ISO_BOOTIMG} -c ${ISO_BOOTCAT} \
$mkisofs_compress_opts \
${MKISOFS_OPTIONS} ${ISODIR}
else
# EFI only OR EFI+PCBIOS
mkisofs -A ${BOOTIMG_VOLUME_ID} -V ${BOOTIMG_VOLUME_ID} \
-o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
-b ${ISO_BOOTIMG} -c ${ISO_BOOTCAT} \
-r ${MKISOFS_OPTIONS} \
$mkisofs_compress_opts ${MKISOFS_OPTIONS} \
-eltorito-alt-boot -eltorito-platform efi \
-b efi.img -no-emul-boot \
${ISODIR}