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generic-poky/meta/classes/kernel-fitimage.bbclass

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inherit kernel-uboot uboot-sign
python __anonymous () {
kerneltypes = d.getVar('KERNEL_IMAGETYPES') or ""
if 'fitImage' in kerneltypes.split():
depends = d.getVar("DEPENDS")
depends = "%s u-boot-mkimage-native dtc-native" % depends
d.setVar("DEPENDS", depends)
if d.getVar("UBOOT_ARCH") == "x86":
replacementtype = "bzImage"
else:
replacementtype = "zImage"
# Override KERNEL_IMAGETYPE_FOR_MAKE variable, which is internal
# to kernel.bbclass . We have to override it, since we pack zImage
# (at least for now) into the fitImage .
typeformake = d.getVar("KERNEL_IMAGETYPE_FOR_MAKE") or ""
if 'fitImage' in typeformake.split():
d.setVar('KERNEL_IMAGETYPE_FOR_MAKE', typeformake.replace('fitImage', replacementtype))
image = d.getVar('INITRAMFS_IMAGE')
if image:
d.appendVarFlag('do_assemble_fitimage_initramfs', 'depends', ' ${INITRAMFS_IMAGE}:do_image_complete')
# Verified boot will sign the fitImage and append the public key to
# U-boot dtb. We ensure the U-Boot dtb is deployed before assembling
# the fitImage:
if d.getVar('UBOOT_SIGN_ENABLE'):
uboot_pn = d.getVar('PREFERRED_PROVIDER_u-boot') or 'u-boot'
d.appendVarFlag('do_assemble_fitimage', 'depends', ' %s:do_deploy' % uboot_pn)
}
# Options for the device tree compiler passed to mkimage '-D' feature:
UBOOT_MKIMAGE_DTCOPTS ??= ""
#
# Emit the fitImage ITS header
#
# $1 ... .its filename
fitimage_emit_fit_header() {
cat << EOF >> ${1}
/dts-v1/;
/ {
description = "U-Boot fitImage for ${DISTRO_NAME}/${PV}/${MACHINE}";
#address-cells = <1>;
EOF
}
#
# Emit the fitImage section bits
#
# $1 ... .its filename
# $2 ... Section bit type: imagestart - image section start
# confstart - configuration section start
# sectend - section end
# fitend - fitimage end
#
fitimage_emit_section_maint() {
case $2 in
imagestart)
cat << EOF >> ${1}
images {
EOF
;;
confstart)
cat << EOF >> ${1}
configurations {
EOF
;;
sectend)
cat << EOF >> ${1}
};
EOF
;;
fitend)
cat << EOF >> ${1}
};
EOF
;;
esac
}
#
# Emit the fitImage ITS kernel section
#
# $1 ... .its filename
# $2 ... Image counter
# $3 ... Path to kernel image
# $4 ... Compression type
fitimage_emit_section_kernel() {
kernel_csum="sha1"
ENTRYPOINT=${UBOOT_ENTRYPOINT}
if test -n "${UBOOT_ENTRYSYMBOL}"; then
ENTRYPOINT=`${HOST_PREFIX}nm ${S}/vmlinux | \
awk '$4=="${UBOOT_ENTRYSYMBOL}" {print $2}'`
fi
cat << EOF >> ${1}
kernel@${2} {
description = "Linux kernel";
data = /incbin/("${3}");
type = "kernel";
arch = "${UBOOT_ARCH}";
os = "linux";
compression = "${4}";
load = <${UBOOT_LOADADDRESS}>;
entry = <${ENTRYPOINT}>;
hash@1 {
algo = "${kernel_csum}";
};
};
EOF
}
#
# Emit the fitImage ITS DTB section
#
# $1 ... .its filename
# $2 ... Image counter
# $3 ... Path to DTB image
fitimage_emit_section_dtb() {
dtb_csum="sha1"
cat << EOF >> ${1}
fdt@${2} {
description = "Flattened Device Tree blob";
data = /incbin/("${3}");
type = "flat_dt";
arch = "${UBOOT_ARCH}";
compression = "none";
hash@1 {
algo = "${dtb_csum}";
};
};
EOF
}
#
# Emit the fitImage ITS setup section
#
# $1 ... .its filename
# $2 ... Image counter
# $3 ... Path to setup image
fitimage_emit_section_setup() {
setup_csum="sha1"
cat << EOF >> ${1}
setup@${2} {
description = "Linux setup.bin";
data = /incbin/("${3}");
type = "x86_setup";
arch = "${UBOOT_ARCH}";
os = "linux";
compression = "none";
load = <0x00090000>;
entry = <0x00090000>;
hash@1 {
algo = "${setup_csum}";
};
};
EOF
}
#
# Emit the fitImage ITS ramdisk section
#
# $1 ... .its filename
# $2 ... Image counter
# $3 ... Path to ramdisk image
fitimage_emit_section_ramdisk() {
ramdisk_csum="sha1"
cat << EOF >> ${1}
ramdisk@${2} {
description = "ramdisk image";
data = /incbin/("${3}");
type = "ramdisk";
arch = "${UBOOT_ARCH}";
os = "linux";
compression = "none";
load = <${UBOOT_RD_LOADADDRESS}>;
entry = <${UBOOT_RD_ENTRYPOINT}>;
hash@1 {
algo = "${ramdisk_csum}";
};
};
EOF
}
#
# Emit the fitImage ITS configuration section
#
# $1 ... .its filename
# $2 ... Linux kernel ID
# $3 ... DTB image ID
# $4 ... ramdisk ID
# $5 ... config ID
fitimage_emit_section_config() {
conf_csum="sha1"
if [ -n "${UBOOT_SIGN_ENABLE}" ] ; then
conf_sign_keyname="${UBOOT_SIGN_KEYNAME}"
fi
# Test if we have any DTBs at all
conf_desc="Linux kernel"
kernel_line="kernel = \"kernel@${2}\";"
fdt_line=""
ramdisk_line=""
if [ -n "${3}" ]; then
conf_desc="${conf_desc}, FDT blob"
fdt_line="fdt = \"fdt@${3}\";"
fi
if [ -n "${4}" ]; then
conf_desc="${conf_desc}, ramdisk"
ramdisk_line="ramdisk = \"ramdisk@${4}\";"
fi
if [ -n "${5}" ]; then
conf_desc="${conf_desc}, setup"
setup_line="setup = \"setup@${5}\";"
fi
cat << EOF >> ${1}
default = "conf@1";
conf@1 {
description = "${conf_desc}";
${kernel_line}
${fdt_line}
${ramdisk_line}
${setup_line}
hash@1 {
algo = "${conf_csum}";
};
EOF
if [ ! -z "${conf_sign_keyname}" ] ; then
sign_line="sign-images = \"kernel\""
if [ -n "${3}" ]; then
sign_line="${sign_line}, \"fdt\""
fi
if [ -n "${4}" ]; then
sign_line="${sign_line}, \"ramdisk\""
fi
if [ -n "${5}" ]; then
sign_line="${sign_line}, \"setup\""
fi
sign_line="${sign_line};"
cat << EOF >> ${1}
signature@1 {
algo = "${conf_csum},rsa2048";
key-name-hint = "${conf_sign_keyname}";
${sign_line}
};
EOF
fi
cat << EOF >> ${1}
};
EOF
}
#
# Assemble fitImage
#
# $1 ... .its filename
# $2 ... fitImage name
# $3 ... include ramdisk
fitimage_assemble() {
kernelcount=1
dtbcount=""
ramdiskcount=${3}
setupcount=""
rm -f ${1} arch/${ARCH}/boot/${2}
fitimage_emit_fit_header ${1}
#
# Step 1: Prepare a kernel image section.
#
fitimage_emit_section_maint ${1} imagestart
uboot_prep_kimage
fitimage_emit_section_kernel ${1} "${kernelcount}" linux.bin "${linux_comp}"
#
# Step 2: Prepare a DTB image section
#
if test -n "${KERNEL_DEVICETREE}"; then
dtbcount=1
for DTB in ${KERNEL_DEVICETREE}; do
if echo ${DTB} | grep -q '/dts/'; then
bbwarn "${DTB} contains the full path to the the dts file, but only the dtb name should be used."
DTB=`basename ${DTB} | sed 's,\.dts$,.dtb,g'`
fi
DTB_PATH="arch/${ARCH}/boot/dts/${DTB}"
if [ ! -e "${DTB_PATH}" ]; then
DTB_PATH="arch/${ARCH}/boot/${DTB}"
fi
fitimage_emit_section_dtb ${1} ${dtbcount} ${DTB_PATH}
dtbcount=`expr ${dtbcount} + 1`
done
fi
#
# Step 3: Prepare a setup section. (For x86)
#
if test -e arch/${ARCH}/boot/setup.bin ; then
setupcount=1
fitimage_emit_section_setup ${1} "${setupcount}" arch/${ARCH}/boot/setup.bin
fi
#
# Step 4: Prepare a ramdisk section.
#
if [ "x${ramdiskcount}" = "x1" ] ; then
copy_initramfs
fitimage_emit_section_ramdisk ${1} "${ramdiskcount}" usr/${INITRAMFS_IMAGE}-${MACHINE}.cpio
fi
fitimage_emit_section_maint ${1} sectend
# Force the first Kernel and DTB in the default config
kernelcount=1
if test -n "${dtbcount}"; then
dtbcount=1
fi
#
# Step 5: Prepare a configurations section
#
fitimage_emit_section_maint ${1} confstart
fitimage_emit_section_config ${1} "${kernelcount}" "${dtbcount}" "${ramdiskcount}" "${setupcount}"
fitimage_emit_section_maint ${1} sectend
fitimage_emit_section_maint ${1} fitend
#
# Step 6: Assemble the image
#
uboot-mkimage \
${@'-D "${UBOOT_MKIMAGE_DTCOPTS}"' if len('${UBOOT_MKIMAGE_DTCOPTS}') else ''} \
-f ${1} \
arch/${ARCH}/boot/${2}
#
# Step 7: Sign the image and add public key to U-Boot dtb
#
if [ "x${UBOOT_SIGN_ENABLE}" = "x1" ] ; then
uboot-mkimage \
${@'-D "${UBOOT_MKIMAGE_DTCOPTS}"' if len('${UBOOT_MKIMAGE_DTCOPTS}') else ''} \
-F -k "${UBOOT_SIGN_KEYDIR}" \
-K "${DEPLOY_DIR_IMAGE}/${UBOOT_DTB_BINARY}" \
-r arch/${ARCH}/boot/${2}
fi
}
do_assemble_fitimage() {
if echo ${KERNEL_IMAGETYPES} | grep -wq "fitImage"; then
cd ${B}
fitimage_assemble fit-image.its fitImage
fi
}
addtask assemble_fitimage before do_install after do_compile
do_assemble_fitimage_initramfs() {
if echo ${KERNEL_IMAGETYPES} | grep -wq "fitImage" && \
test -n "${INITRAMFS_IMAGE}" ; then
cd ${B}
fitimage_assemble fit-image-${INITRAMFS_IMAGE}.its fitImage-${INITRAMFS_IMAGE} 1
fi
}
addtask assemble_fitimage_initramfs before do_deploy after do_install
kernel_do_deploy[vardepsexclude] = "DATETIME"
kernel_do_deploy_append() {
# Update deploy directory
if echo ${KERNEL_IMAGETYPES} | grep -wq "fitImage"; then
cd ${B}
echo "Copying fit-image.its source file..."
its_base_name="fitImage-its-${PV}-${PR}-${MACHINE}-${DATETIME}"
its_symlink_name=fitImage-its-${MACHINE}
install -m 0644 fit-image.its ${DEPLOYDIR}/${its_base_name}.its
linux_bin_base_name="fitImage-linux.bin-${PV}-${PR}-${MACHINE}-${DATETIME}"
linux_bin_symlink_name=fitImage-linux.bin-${MACHINE}
install -m 0644 linux.bin ${DEPLOYDIR}/${linux_bin_base_name}.bin
if [ -n "${INITRAMFS_IMAGE}" ]; then
echo "Copying fit-image-${INITRAMFS_IMAGE}.its source file..."
its_initramfs_base_name="${KERNEL_IMAGETYPE}-its-${INITRAMFS_IMAGE}-${PV}-${PR}-${MACHINE}-${DATETIME}"
its_initramfs_symlink_name=${KERNEL_IMAGETYPE}-its-${INITRAMFS_IMAGE}-${MACHINE}
install -m 0644 fit-image-${INITRAMFS_IMAGE}.its ${DEPLOYDIR}/${its_initramfs_base_name}.its
fit_initramfs_base_name="${KERNEL_IMAGETYPE}-${INITRAMFS_IMAGE}-${PV}-${PR}-${MACHINE}-${DATETIME}"
fit_initramfs_symlink_name=${KERNEL_IMAGETYPE}-${INITRAMFS_IMAGE}-${MACHINE}
install -m 0644 arch/${ARCH}/boot/fitImage-${INITRAMFS_IMAGE} ${DEPLOYDIR}/${fit_initramfs_base_name}.bin
fi
cd ${DEPLOYDIR}
ln -sf ${its_base_name}.its ${its_symlink_name}.its
ln -sf ${linux_bin_base_name}.bin ${linux_bin_symlink_name}.bin
if [ -n "${INITRAMFS_IMAGE}" ]; then
ln -sf ${its_initramfs_base_name}.its ${its_initramfs_symlink_name}.its
ln -sf ${fit_initramfs_base_name}.bin ${fit_initramfs_symlink_name}.bin
fi
fi
}
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