diff options
Diffstat (limited to 'poky/meta/classes/kernel-devicetree.bbclass')
| -rw-r--r-- | poky/meta/classes/kernel-devicetree.bbclass | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/poky/meta/classes/kernel-devicetree.bbclass b/poky/meta/classes/kernel-devicetree.bbclass new file mode 100644 index 000000000..4f80cc62e --- /dev/null +++ b/poky/meta/classes/kernel-devicetree.bbclass @@ -0,0 +1,112 @@ +# Support for device tree generation +PACKAGES_append = " \ + ${KERNEL_PACKAGE_NAME}-devicetree \ + ${@[d.getVar('KERNEL_PACKAGE_NAME') + '-image-zimage-bundle', ''][d.getVar('KERNEL_DEVICETREE_BUNDLE') != '1']} \ +" +FILES_${KERNEL_PACKAGE_NAME}-devicetree = "/${KERNEL_IMAGEDEST}/*.dtb /${KERNEL_IMAGEDEST}/*.dtbo" +FILES_${KERNEL_PACKAGE_NAME}-image-zimage-bundle = "/${KERNEL_IMAGEDEST}/zImage-*.dtb.bin" + +# Generate kernel+devicetree bundle +KERNEL_DEVICETREE_BUNDLE ?= "0" + +normalize_dtb () { + DTB="$1" + 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 + echo "${DTB}" +} + +get_real_dtb_path_in_kernel () { + DTB="$1" + DTB_PATH="${B}/arch/${ARCH}/boot/dts/${DTB}" + if [ ! -e "${DTB_PATH}" ]; then + DTB_PATH="${B}/arch/${ARCH}/boot/${DTB}" + fi + echo "${DTB_PATH}" +} + +do_configure_append() { + if [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then + if echo ${KERNEL_IMAGETYPE_FOR_MAKE} | grep -q 'zImage'; then + case "${ARCH}" in + "arm") + config="${B}/.config" + if ! grep -q 'CONFIG_ARM_APPENDED_DTB=y' $config; then + bbwarn 'CONFIG_ARM_APPENDED_DTB is NOT enabled in the kernel. Enabling it to allow the kernel to boot with the Device Tree appended!' + sed -i "/CONFIG_ARM_APPENDED_DTB[ =]/d" $config + echo "CONFIG_ARM_APPENDED_DTB=y" >> $config + echo "# CONFIG_ARM_ATAG_DTB_COMPAT is not set" >> $config + fi + ;; + *) + bberror "KERNEL_DEVICETREE_BUNDLE is not supported for ${ARCH}. Currently it is only supported for 'ARM'." + esac + else + bberror 'The KERNEL_DEVICETREE_BUNDLE requires the KERNEL_IMAGETYPE to contain zImage.' + fi + fi +} + +do_compile_append() { + for DTB in ${KERNEL_DEVICETREE}; do + DTB=`normalize_dtb "${DTB}"` + oe_runmake ${DTB} + done +} + +do_install_append() { + for DTB in ${KERNEL_DEVICETREE}; do + DTB=`normalize_dtb "${DTB}"` + DTB_EXT=${DTB##*.} + DTB_PATH=`get_real_dtb_path_in_kernel "${DTB}"` + DTB_BASE_NAME=`basename ${DTB} ."${DTB_EXT}"` + install -m 0644 ${DTB_PATH} ${D}/${KERNEL_IMAGEDEST}/${DTB_BASE_NAME}.${DTB_EXT} + for type in ${KERNEL_IMAGETYPE_FOR_MAKE}; do + symlink_name=${type}"-"${KERNEL_IMAGE_SYMLINK_NAME} + DTB_SYMLINK_NAME=`echo ${symlink_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"` + ln -sf ${DTB_BASE_NAME}.${DTB_EXT} ${D}/${KERNEL_IMAGEDEST}/devicetree-${DTB_SYMLINK_NAME}.${DTB_EXT} + + if [ "$type" = "zImage" ] && [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then + cat ${D}/${KERNEL_IMAGEDEST}/$type \ + ${D}/${KERNEL_IMAGEDEST}/${DTB_BASE_NAME}.${DTB_EXT} \ + > ${D}/${KERNEL_IMAGEDEST}/$type-${DTB_BASE_NAME}.${DTB_EXT}.bin + fi + done + done +} + +do_deploy_append() { + for DTB in ${KERNEL_DEVICETREE}; do + DTB=`normalize_dtb "${DTB}"` + DTB_EXT=${DTB##*.} + DTB_BASE_NAME=`basename ${DTB} ."${DTB_EXT}"` + for type in ${KERNEL_IMAGETYPE_FOR_MAKE}; do + base_name=${type}"-"${KERNEL_IMAGE_BASE_NAME} + symlink_name=${type}"-"${KERNEL_IMAGE_SYMLINK_NAME} + DTB_NAME=`echo ${base_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"` + DTB_SYMLINK_NAME=`echo ${symlink_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"` + DTB_PATH=`get_real_dtb_path_in_kernel "${DTB}"` + install -d ${DEPLOYDIR} + install -m 0644 ${DTB_PATH} ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT} + ln -sf ${DTB_NAME}.${DTB_EXT} ${DEPLOYDIR}/${DTB_SYMLINK_NAME}.${DTB_EXT} + ln -sf ${DTB_NAME}.${DTB_EXT} ${DEPLOYDIR}/${DTB_BASE_NAME}.${DTB_EXT} + + if [ "$type" = "zImage" ] && [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then + cat ${DEPLOYDIR}/$type \ + ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT} \ + > ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT}.bin + ln -sf ${DTB_NAME}.${DTB_EXT}.bin ${DEPLOYDIR}/$type-${DTB_BASE_NAME}.${DTB_EXT}.bin + + if [ -e "${KERNEL_OUTPUT_DIR}/${type}.initramfs" ]; then + cat ${KERNEL_OUTPUT_DIR}/${type}.initramfs \ + ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT} \ + > ${DEPLOYDIR}/${type}-${INITRAMFS_BASE_NAME}-${DTB_BASE_NAME}.${DTB_EXT}.bin + ln -sf ${type}-${INITRAMFS_BASE_NAME}-${DTB_BASE_NAME}.${DTB_EXT}.bin \ + ${DEPLOYDIR}/${type}-initramfs-${DTB_BASE_NAME}.${DTB_EXT}-${MACHINE}.bin + fi + fi + done + done +} |
