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# Copyright (C) 2004, Advanced Micro Devices, Inc. All Rights Reserved
# Released under the MIT license (see packages/COPYING)
# Creates a bootable image using syslinux, your kernel and an optional
# initrd
#
# End result is two things:
#
# 1. A .hddimg file which is an msdos filesystem containing syslinux, a kernel,
# an initrd and a rootfs image. These can be written to harddisks directly and
# also booted on USB flash disks (write them there with dd).
#
# 2. A CD .iso image
# Boot process is that the initrd will boot and process which label was selected
# in syslinux. Actions based on the label are then performed (e.g. installing to
# an hdd)
# External variables (also used by syslinux.bbclass)
# ${INITRD} - indicates a filesystem image to use as an initrd (optional)
# ${NOISO} - skip building the ISO image if set to 1
# ${ROOTFS} - indicates a filesystem image to include as the root filesystem (optional)
do_bootimg[depends] += "dosfstools-native:do_populate_sysroot \
mtools-native:do_populate_sysroot \
cdrtools-native:do_populate_sysroot"
PACKAGES = " "
EXCLUDE_FROM_WORLD = "1"
HDDDIR = "${S}/hdd/boot"
ISODIR = "${S}/cd"
BOOTIMG_VOLUME_ID ?= "boot"
BOOTIMG_EXTRA_SPACE ?= "512"
inherit syslinux
build_iso() {
# Only create an ISO if we have an INITRD and NOISO was not set
if [ -z "${INITRD}" ] || [ ! -s "${INITRD}" ] || [ "${NOISO}" = "1" ]; then
bbnote "ISO image will not be created."
return
fi
install -d ${ISODIR}
syslinux_iso_populate
mkisofs -V ${BOOTIMG_VOLUME_ID} \
-o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
-b ${ISO_BOOTIMG} -c ${ISO_BOOTCAT} -r \
${MKISOFS_OPTIONS} ${ISODIR}
cd ${DEPLOY_DIR_IMAGE}
rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.iso
ln -s ${IMAGE_NAME}.iso ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.iso
}
build_hddimg() {
# Create an HDD image
if [ "${NOHDD}" != "1" ] ; then
install -d ${HDDDIR}
syslinux_hddimg_populate
# Determine the block count for the final image
BLOCKS=`du -bks ${HDDDIR} | cut -f 1`
SIZE=`expr $BLOCKS + ${BOOTIMG_EXTRA_SPACE}`
mkdosfs -n ${BOOTIMG_VOLUME_ID} -d ${HDDDIR} \
-C ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hddimg $SIZE
syslinux_hddimg_install
chmod 644 ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hddimg
cd ${DEPLOY_DIR_IMAGE}
rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hddimg
ln -s ${IMAGE_NAME}.hddimg ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hddimg
fi
}
python do_bootimg() {
bb.build.exec_func('build_syslinux_cfg', d)
bb.build.exec_func('build_hddimg', d)
bb.build.exec_func('build_iso', d)
}
addtask bootimg before do_build
do_bootimg[nostamp] = "1"
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