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# bootimg.oeclass
# Copyright (C) 2004, Advanced Micro Devices, Inc. All Rights Reserved
# Released under the MIT license (see packages/COPYING)
# This creates a bootable image using syslinux, your kernel and an optional
# initrd
# External variables needed
# ${INITRD} - indicates a filesystem image to use as an initrd (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
# ${SYSLINUX_OPTS} - additional options to add to the syslinux file ';' delimited
DEPENDS_append=" dosfstools-native syslinux-native mtools-native cdrtools-native"
BDIR="${WORKDIR}/boot"
ISODIR="${IMAGE_ROOTFS}/isolinux/"
BOOTIMG_VOLUME_ID ?= "oe"
BOOTIMG_EXTRA_SPACE ?= "64"
# Get the build_syslinux_cfg() function from the syslinux class
SYSLINUXCFG="${BDIR}/syslinux.cfg"
SYSLINUXMENU="${BDIR}/menu"
inherit syslinux
build_boot_bin() {
install -d ${BDIR}
install -m 0644 ${STAGING_KERNEL_DIR}/bzImage \
${BDIR}/vmlinuz
if [ -n "${INITRD}" ] && [ -s "${INITRD}" ]; then
install -m 0644 ${INITRD} ${BDIR}/initrd
fi
install -m 444 ${STAGING_DIR}/${BUILD_SYS}/share/syslinux/ldlinux.sys \
${BDIR}/ldlinux.sys
# Do a little math, bash style
#BLOCKS=`du -s ${BDIR} | cut -f 1`
BLOCKS=`du -bks ${BDIR} | cut -f 1`
SIZE=`expr $BLOCKS + ${BOOTIMG_EXTRA_SPACE}`
mkdosfs -F 12 -n ${BOOTIMG_VOLUME_ID} -d ${BDIR} \
-C ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}-boot.bin $SIZE
syslinux ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}-boot.bin
#Create an ISO if we have an INITRD
if [ -n "${INITRD}" ] && [ -s "${INITRD}" ] && [ "${NOISO}" != "1" ] ; then
install -d ${ISODIR}
# Install the kernel
install -m 0644 ${STAGING_KERNEL_DIR}/bzImage \
${ISODIR}/vmlinuz
# Install the configuration files
cp ${BDIR}/syslinux.cfg ${ISODIR}/isolinux.cfg
if [ -f ${SYSLINUXMENU} ]; then
cp ${SYSLINUXMENU} ${ISODIR}
fi
install -m 0644 ${INITRD} ${ISODIR}/initrd
# And install the syslinux stuff
cp ${STAGING_DIR}/${BUILD_SYS}/share/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 \
${IMAGE_ROOTFS}
fi
}
python do_bootimg() {
docfg = bb.data.getVar('AUTO_SYSLINUXCFG', d, 1)
if docfg:
bb.build.exec_func('build_syslinux_cfg', d)
bb.build.exec_func('build_boot_bin', d)
}
# We need to run after bootsplash if it exists, so thats why this line
# is such. Don't worry, if you don't do bootsplash, nobody will notice
addtask bootimg before do_build after do_bootsplash
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