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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"
EFI = ${@base_contains("MACHINE_FEATURES", "efi", "1", "0", d)}
EFI_CLASS = ${@base_contains("MACHINE_FEATURES", "efi", "grub-efi", "dummy", d)}
# Include legacy boot if MACHINE_FEATURES includes "pcbios" or if it does not
# contain "efi". This way legacy is supported by default if neither is
# specified, maintaining the original behavior.
def pcbios(d):
pcbios = base_contains("MACHINE_FEATURES", "pcbios", "1", "0", d)
if pcbios == "0":
pcbios = base_contains("MACHINE_FEATURES", "efi", "0", "1", d)
return pcbios
def pcbios_class(d):
if d.getVar("PCBIOS", True) == "1":
return "syslinux"
return "dummy"
PCBIOS = ${@pcbios(d)}
PCBIOS_CLASS = ${@pcbios_class(d)}
inherit ${PCBIOS_CLASS}
inherit ${EFI_CLASS}
build_iso() {
# Only create an ISO if we have an INITRD and NOISO was not set
if [ -z "${INITRD}" ] || [ ! -s "${INITRD}" ] || [ "${NOISO}" = "1" ]; then
bbnote "ISO image will not be created."
return
fi
install -d ${ISODIR}
if [ "${PCBIOS}" = "1" ]; then
syslinux_iso_populate
fi
if [ "${EFI}" = "1" ]; then
grubefi_iso_populate
fi
if [ "${PCBIOS}" = "1" ]; then
mkisofs -V ${BOOTIMG_VOLUME_ID} \
-o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
-b ${ISO_BOOTIMG} -c ${ISO_BOOTCAT} -r \
${MKISOFS_OPTIONS} ${ISODIR}
else
bbnote "EFI-only ISO images are untested, please provide feedback."
mkisofs -V ${BOOTIMG_VOLUME_ID} \
-o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
-r ${ISODIR}
fi
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 ${HDDDIR}
if [ "${PCBIOS}" = "1" ]; then
syslinux_hddimg_populate
fi
if [ "${EFI}" = "1" ]; then
grubefi_hddimg_populate
fi
# Determine the 1024 byte block count for the final image.
BLOCKS=`du --apparent-size -ks ${HDDDIR} | cut -f 1`
SIZE=`expr $BLOCKS + ${BOOTIMG_EXTRA_SPACE}`
# Ensure total sectors is an integral number of sectors per
# track or mcopy will complain. Sectors are 512 bytes, and and
# we generate images with 32 sectors per track. This calculation
# is done in blocks, which are twice the size of sectors, thus
# the 16 instead of 32.
SIZE=$(expr $SIZE + $(expr 16 - $(expr $SIZE % 16)))
IMG=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hddimg
mkdosfs -n ${BOOTIMG_VOLUME_ID} -S 512 -C ${IMG} ${SIZE}
# Copy HDDDIR recursively into the image file directly
mcopy -i ${IMG} -s ${HDDDIR}/* ::/
if [ "${PCBIOS}" = "1" ]; then
syslinux_hddimg_install
fi
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() {
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_grub_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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