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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
# ${INITRD} - indicates a filesystem image to use as an initrd (optional)
# ${ROOTFS} - indicates a filesystem image to include as the root filesystem (optional)
# ${AUTO_SYSLINUXCFG} - set this to 1 to enable creating an automatic config
# ${LABELS} - a list of targets for the automatic config
# ${APPEND} - an override list of append strings for each label
# ${SYSLINUX_OPTS} - additional options to add to the syslinux file ';' delimited
do_bootimg[depends] += "dosfstools-native:do_populate_sysroot \
syslinux:do_populate_sysroot \
syslinux-native:do_populate_sysroot \
mtools-native:do_populate_sysroot \
cdrtools-native:do_populate_sysroot"
PACKAGES = " "
EXCLUDE_FROM_WORLD = "1"
HDDDIR = "${S}/hdd/boot"
ISODIR = "${S}/cd/isolinux"
BOOTIMG_VOLUME_ID ?= "boot"
BOOTIMG_EXTRA_SPACE ?= "512"
# Get the build_syslinux_cfg() function from the syslinux class
SYSLINUXCFG = "${HDDDIR}/syslinux.cfg"
SYSLINUXMENU = "${HDDDIR}/menu"
inherit syslinux
build_iso() {
# Only create an ISO if we have an INITRD and NOISO was not set
if [ -z "${INITRD}" ] || [ ! -s "${INITRD}" ] || [ "${NOISO}" = "1" ]; then
bbnote "ISO image will not be created."
return
fi
install -d ${ISODIR}
# Install the kernel
install -m 0644 ${STAGING_DIR_HOST}/kernel/bzImage \
${ISODIR}/vmlinuz
# Install the configuration files
cp ${HDDDIR}/syslinux.cfg ${ISODIR}/isolinux.cfg
if [ -f ${SYSLINUXMENU} ]; then
cp ${SYSLINUXMENU} ${ISODIR}
fi
install -m 0644 ${INITRD} ${ISODIR}/initrd
if [ -n "${ROOTFS}" ] && [ -s "${ROOTFS}" ]; then
install -m 0644 ${ROOTFS} ${ISODIR}/rootfs.img
fi
# And install the syslinux stuff
cp ${STAGING_LIBDIR}/syslinux/isolinux.bin ${ISODIR}
mkisofs -V ${BOOTIMG_VOLUME_ID} \
-o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
-b isolinux/isolinux.bin -c isolinux/boot.cat -r \
-no-emul-boot -boot-load-size 4 -boot-info-table \
${S}/cd/
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}
install -m 0644 ${STAGING_DIR_HOST}/kernel/bzImage \
${HDDDIR}/vmlinuz
if [ -n "${INITRD}" ] && [ -s "${INITRD}" ]; then
install -m 0644 ${INITRD} ${HDDDIR}/initrd
fi
if [ -n "${ROOTFS}" ] && [ -s "${ROOTFS}" ]; then
install -m 0644 ${ROOTFS} ${HDDDIR}/rootfs.img
fi
install -m 444 ${STAGING_LIBDIR}/syslinux/ldlinux.sys ${HDDDIR}/ldlinux.sys
# Do a little math, bash style
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 ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hddimg
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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