# This .inc file allows building and deploying multiple sets of kernel + modules # with different defconfigs # # Note that this include will NOT stage anything nor create packages, since that # is virtually impossible. Userspace should be built against the 'regular' kernel # # The intended usecase is for machines that have mutually exclusive drivers due # to e.g. pinmuxing issues. For example the LogicPD omap-l138 experimenter board # can have multiple mutually exclusive expansion boards like lcd, ethernet, # sound, 20x2 character LCD, etc. To be able to easily test all of those you can # use this .inc # # To make it easier finding the original defconfig from a running kernel, this # also forcefully turns on CONFIG_IKCONFIG_PROC so people can do # 'zcat /proc/config.gz' on the target. # # The function get_kernelversion uses generated header files to extract the # version number. But those files are not available until do_compile, and # do_compileconfigs is injected before that, hence the version becomes None # and breaks in several places. Introduce a task do_preparekernel that calls # "make prepare" in the kernel tree to generate all the necessary files. require linux.inc SRC_URI += " \ file://configs " MULTI_CONFIG_BASE_SUFFIX = "multi-config-" MODULE_IMAGE_BASE_NAME ?= "modules-${PE}-${PV}-${PR}-${MACHINE}-${DATETIME}" do_preparekernel () { unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE oe_runmake prepare CC="${KERNEL_CC}" LD="${KERNEL_LD}" } addtask preparekernel after do_configure before do_compile do_compileconfigs () { # fixup for fetcher change if [ -e ${WORKDIR}/configs/configs ] ; then if [ -e ${WORKDIR}/configs/configs/empty ] ; then mv ${WORKDIR}/configs/configs/empty ${WORKDIR}/configs/ fi mv ${WORKDIR}/configs/configs/* ${WORKDIR}/configs/ rm -rf ${WORKDIR}/configs/configs fi # Compile and Install additional kernel configs if found if [ -e ${WORKDIR}/configs/empty ] ; then echo "No configs found in configs/ directory, skipping to regular build" else echo "Multiple configs found, building those first" # Context Save the regular 'defconfig' cp ${WORKDIR}/defconfig ${WORKDIR}/defconfig.save for config in ${WORKDIR}/configs/* ; do # Copy in alternative config cd ${S} cp $config ${WORKDIR}/defconfig # Enable config to be viewed on the target echo "CONFIG_IKCONFIG=y" >> ${WORKDIR}/defconfig echo "CONFIG_IKCONFIG_PROC=y" >> ${WORKDIR}/defconfig # Build and Install this alternative kernel do_configure kernel_do_compile do_compile_kernelmodules kernel_do_install # Drop the resulting images in the deploy dir install -d ${DEPLOY_DIR_IMAGE} install -m 0644 ${KERNEL_OUTPUT} ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGE_BASE_NAME}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).bin if [ -d "${D}/lib" ]; then tar --owner=root --group=root -cvzf ${DEPLOY_DIR_IMAGE}/${MODULE_IMAGE_BASE_NAME}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).tgz -C ${D} lib fi # Install the final config alongside the images cp .config ${DEPLOY_DIR_IMAGE}/config-${PV}-${PR}-${MACHINE}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).config # Create symlinks cd ${DEPLOY_DIR_IMAGE} rm -f ${KERNEL_IMAGE_SYMLINK_NAME}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).bin ln -sf ${KERNEL_IMAGE_BASE_NAME}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).bin ${KERNEL_IMAGE_SYMLINK_NAME}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).bin rm -f modules-${MACHINE}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).tgz ln -sf ${MODULE_IMAGE_BASE_NAME}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).tgz modules-${MACHINE}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).tgz rm -f config-${MACHINE}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).config ln -sf config-${PV}-${PR}-${MACHINE}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).config config-${MACHINE}.${MULTI_CONFIG_BASE_SUFFIX}$(basename $config).config done # Restore the regular 'defconfig' cp ${WORKDIR}/defconfig.save ${WORKDIR}/defconfig cd ${S} do_configure fi } # For reference, copy .config to deploy image do_deploy_append () { install -d ${DEPLOY_DIR_IMAGE} # Drop the regular defconfig along side the others for consistency cd ${S} cp .config ${DEPLOY_DIR_IMAGE}/config-${PV}-${PR}-${MACHINE}.config # add symlink cd ${DEPLOY_DIR_IMAGE} rm -f config-${MACHINE}.config ln -s config-${PV}-${PR}-${MACHINE}.config config-${MACHINE}.config rm -f modules-${MACHINE}.tgz ln -sf ${MODULE_IMAGE_BASE_NAME}.tgz modules-${MACHINE}.tgz } do_compileconfigs[depends] += "u-boot-mkimage-native:do_populate_sysroot virtual/${TARGET_PREFIX}gcc:do_populate_sysroot" addtask compileconfigs after do_preparekernel before do_compile