inherit linux-kernel-base kernel-module-split PROVIDES += "virtual/kernel" DEPENDS += "virtual/${TARGET_PREFIX}binutils virtual/${TARGET_PREFIX}gcc kmod-native depmodwrapper-cross bc-native" S = "${STAGING_KERNEL_DIR}" B = "${WORKDIR}/build" KBUILD_OUTPUT = "${B}" OE_TERMINAL_EXPORTS += "KBUILD_OUTPUT" # we include gcc above, we dont need virtual/libc INHIBIT_DEFAULT_DEPS = "1" KERNEL_IMAGETYPE ?= "zImage" INITRAMFS_IMAGE ?= "" INITRAMFS_TASK ?= "" INITRAMFS_IMAGE_BUNDLE ?= "" python __anonymous () { import re kerneltype = d.getVar('KERNEL_IMAGETYPE', True) d.setVar("KERNEL_IMAGETYPE_FOR_MAKE", re.sub(r'\.gz$', '', kerneltype)) image = d.getVar('INITRAMFS_IMAGE', True) if image: d.appendVarFlag('do_bundle_initramfs', 'depends', ' ${INITRAMFS_IMAGE}:do_image_complete') # NOTE: setting INITRAMFS_TASK is for backward compatibility # The preferred method is to set INITRAMFS_IMAGE, because # this INITRAMFS_TASK has circular dependency problems # if the initramfs requires kernel modules image_task = d.getVar('INITRAMFS_TASK', True) if image_task: d.appendVarFlag('do_configure', 'depends', ' ${INITRAMFS_TASK}') } # Here we pull in all various kernel image types which we support. # # In case you're wondering why kernel.bbclass inherits the other image # types instead of the other way around, the reason for that is to # maintain compatibility with various currently existing meta-layers. # By pulling in the various kernel image types here, we retain the # original behavior of kernel.bbclass, so no meta-layers should get # broken. # # KERNEL_CLASSES by default pulls in kernel-uimage.bbclass, since this # used to be the default behavior when only uImage was supported. This # variable can be appended by users who implement support for new kernel # image types. KERNEL_CLASSES ?= " kernel-uimage " inherit ${KERNEL_CLASSES} # Old style kernels may set ${S} = ${WORKDIR}/git for example # We need to move these over to STAGING_KERNEL_DIR. We can't just # create the symlink in advance as the git fetcher can't cope with # the symlink. do_unpack[cleandirs] += " ${S} ${STAGING_KERNEL_DIR} ${B} ${STAGING_KERNEL_BUILDDIR}" do_clean[cleandirs] += " ${S} ${STAGING_KERNEL_DIR} ${B} ${STAGING_KERNEL_BUILDDIR}" base_do_unpack_append () { s = d.getVar("S", True) if s[-1] == '/': # drop trailing slash, so that os.symlink(kernsrc, s) doesn't use s as directory name and fail s=s[:-1] kernsrc = d.getVar("STAGING_KERNEL_DIR", True) if s != kernsrc: bb.utils.mkdirhier(kernsrc) bb.utils.remove(kernsrc, recurse=True) if d.getVar("EXTERNALSRC", True): # With EXTERNALSRC S will not be wiped so we can symlink to it os.symlink(s, kernsrc) else: import shutil shutil.move(s, kernsrc) os.symlink(kernsrc, s) } inherit kernel-arch deploy PACKAGES_DYNAMIC += "^kernel-module-.*" PACKAGES_DYNAMIC += "^kernel-image-.*" PACKAGES_DYNAMIC += "^kernel-firmware-.*" export OS = "${TARGET_OS}" export CROSS_COMPILE = "${TARGET_PREFIX}" KERNEL_PRIORITY ?= "${@int(d.getVar('PV',1).split('-')[0].split('+')[0].split('.')[0]) * 10000 + \ int(d.getVar('PV',1).split('-')[0].split('+')[0].split('.')[1]) * 100 + \ int(d.getVar('PV',1).split('-')[0].split('+')[0].split('.')[-1])}" KERNEL_RELEASE ?= "${KERNEL_VERSION}" # Where built kernel lies in the kernel tree KERNEL_OUTPUT ?= "arch/${ARCH}/boot/${KERNEL_IMAGETYPE}" KERNEL_IMAGEDEST = "boot" # # configuration # export CMDLINE_CONSOLE = "console=${@d.getVar("KERNEL_CONSOLE",1) or "ttyS0"}" KERNEL_VERSION = "${@get_kernelversion_headers('${B}')}" KERNEL_LOCALVERSION ?= "" # kernels are generally machine specific PACKAGE_ARCH = "${MACHINE_ARCH}" # U-Boot support UBOOT_ENTRYPOINT ?= "20008000" UBOOT_LOADADDRESS ?= "${UBOOT_ENTRYPOINT}" # Some Linux kernel configurations need additional parameters on the command line KERNEL_EXTRA_ARGS ?= "" # For the kernel, we don't want the '-e MAKEFLAGS=' in EXTRA_OEMAKE. # We don't want to override kernel Makefile variables from the environment EXTRA_OEMAKE = "" KERNEL_ALT_IMAGETYPE ??= "" copy_initramfs() { echo "Copying initramfs into ./usr ..." # In case the directory is not created yet from the first pass compile: mkdir -p ${B}/usr # Find and use the first initramfs image archive type we find rm -f ${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.cpio for img in cpio.gz cpio.lz4 cpio.lzo cpio.lzma cpio.xz; do if [ -e "${DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE}-${MACHINE}.$img" ]; then cp ${DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE}-${MACHINE}.$img ${B}/usr/. case $img in *gz) echo "gzip decompressing image" gunzip -f ${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.$img break ;; *lz4) echo "lz4 decompressing image" lz4 -df ${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.$img break ;; *lzo) echo "lzo decompressing image" lzop -df ${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.$img break ;; *lzma) echo "lzma decompressing image" lzma -df ${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.$img break ;; *xz) echo "xz decompressing image" xz -df ${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.$img break ;; esac fi done echo "Finished copy of initramfs into ./usr" } INITRAMFS_BASE_NAME = "${KERNEL_IMAGETYPE}-initramfs-${PV}-${PR}-${MACHINE}-${DATETIME}" INITRAMFS_BASE_NAME[vardepsexclude] = "DATETIME" do_bundle_initramfs () { if [ ! -z "${INITRAMFS_IMAGE}" -a x"${INITRAMFS_IMAGE_BUNDLE}" = x1 ]; then echo "Creating a kernel image with a bundled initramfs..." copy_initramfs if [ -e ${KERNEL_OUTPUT} ] ; then mv -f ${KERNEL_OUTPUT} ${KERNEL_OUTPUT}.bak fi use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.cpio kernel_do_compile mv -f ${KERNEL_OUTPUT} ${KERNEL_OUTPUT}.initramfs mv -f ${KERNEL_OUTPUT}.bak ${KERNEL_OUTPUT} # Update install area echo "There is kernel image bundled with initramfs: ${B}/${KERNEL_OUTPUT}.initramfs" install -m 0644 ${B}/${KERNEL_OUTPUT}.initramfs ${D}/boot/${KERNEL_IMAGETYPE}-initramfs-${MACHINE}.bin echo "${B}/${KERNEL_OUTPUT}.initramfs" fi } python do_devshell_prepend () { os.environ["LDFLAGS"] = '' } addtask bundle_initramfs after do_install before do_deploy kernel_do_compile() { unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE # The $use_alternate_initrd is only set from # do_bundle_initramfs() This variable is specifically for the # case where we are making a second pass at the kernel # compilation and we want to force the kernel build to use a # different initramfs image. The way to do that in the kernel # is to specify: # make ...args... CONFIG_INITRAMFS_SOURCE=some_other_initramfs.cpio if [ "$use_alternate_initrd" = "" ] && [ "${INITRAMFS_TASK}" != "" ] ; then # The old style way of copying an prebuilt image and building it # is turned on via INTIRAMFS_TASK != "" copy_initramfs use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.cpio fi oe_runmake ${KERNEL_IMAGETYPE_FOR_MAKE} ${KERNEL_ALT_IMAGETYPE} CC="${KERNEL_CC}" LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS} $use_alternate_initrd if test "${KERNEL_IMAGETYPE_FOR_MAKE}.gz" = "${KERNEL_IMAGETYPE}"; then gzip -9c < "${KERNEL_IMAGETYPE_FOR_MAKE}" > "${KERNEL_OUTPUT}" fi } do_compile_kernelmodules() { unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE if (grep -q -i -e '^CONFIG_MODULES=y$' ${B}/.config); then oe_runmake -C ${B} ${PARALLEL_MAKE} modules CC="${KERNEL_CC}" LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS} # Module.symvers gets updated during the # building of the kernel modules. We need to # update this in the shared workdir since some # external kernel modules has a dependency on # other kernel modules and will look at this # file to do symbol lookups cp Module.symvers ${STAGING_KERNEL_BUILDDIR}/ else bbnote "no modules to compile" fi } addtask compile_kernelmodules after do_compile before do_strip kernel_do_install() { # # First install the modules # unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE if (grep -q -i -e '^CONFIG_MODULES=y$' .config); then oe_runmake DEPMOD=echo INSTALL_MOD_PATH="${D}" modules_install rm "${D}/lib/modules/${KERNEL_VERSION}/build" rm "${D}/lib/modules/${KERNEL_VERSION}/source" # If the kernel/ directory is empty remove it to prevent QA issues rmdir --ignore-fail-on-non-empty "${D}/lib/modules/${KERNEL_VERSION}/kernel" else bbnote "no modules to install" fi # # Install various kernel output (zImage, map file, config, module support files) # install -d ${D}/${KERNEL_IMAGEDEST} install -d ${D}/boot install -m 0644 ${KERNEL_OUTPUT} ${D}/${KERNEL_IMAGEDEST}/${KERNEL_IMAGETYPE}-${KERNEL_VERSION} install -m 0644 System.map ${D}/boot/System.map-${KERNEL_VERSION} install -m 0644 .config ${D}/boot/config-${KERNEL_VERSION} install -m 0644 vmlinux ${D}/boot/vmlinux-${KERNEL_VERSION} [ -e Module.symvers ] && install -m 0644 Module.symvers ${D}/boot/Module.symvers-${KERNEL_VERSION} install -d ${D}${sysconfdir}/modules-load.d install -d ${D}${sysconfdir}/modprobe.d } do_install[prefuncs] += "package_get_auto_pr" addtask shared_workdir after do_compile before do_compile_kernelmodules addtask shared_workdir_setscene do_shared_workdir_setscene () { exit 1 } emit_depmod_pkgdata() { # Stash data for depmod install -d ${PKGDESTWORK}/kernel-depmod/ echo "${KERNEL_VERSION}" > ${PKGDESTWORK}/kernel-depmod/kernel-abiversion cp ${B}/System.map ${PKGDESTWORK}/kernel-depmod/System.map-${KERNEL_VERSION} } PACKAGEFUNCS += "emit_depmod_pkgdata" do_shared_workdir () { cd ${B} kerneldir=${STAGING_KERNEL_BUILDDIR} install -d $kerneldir # # Store the kernel version in sysroots for module-base.bbclass # echo "${KERNEL_VERSION}" > $kerneldir/kernel-abiversion # Copy files required for module builds cp System.map $kerneldir/System.map-${KERNEL_VERSION} cp Module.symvers $kerneldir/ cp .config $kerneldir/ mkdir -p $kerneldir/include/config cp include/config/kernel.release $kerneldir/include/config/kernel.release # We can also copy over all the generated files and avoid special cases # like version.h, but we've opted to keep this small until file creep starts # to happen if [ -e include/linux/version.h ]; then mkdir -p $kerneldir/include/linux cp include/linux/version.h $kerneldir/include/linux/version.h fi # As of Linux kernel version 3.0.1, the clean target removes # arch/powerpc/lib/crtsavres.o which is present in # KBUILD_LDFLAGS_MODULE, making it required to build external modules. if [ ${ARCH} = "powerpc" ]; then mkdir -p $kerneldir/arch/powerpc/lib/ cp arch/powerpc/lib/crtsavres.o $kerneldir/arch/powerpc/lib/crtsavres.o fi if [ -d include/generated ]; then mkdir -p $kerneldir/include/generated/ cp -fR include/generated/* $kerneldir/include/generated/ fi if [ -d arch/${ARCH}/include/generated ]; then mkdir -p $kerneldir/arch/${ARCH}/include/generated/ cp -fR arch/${ARCH}/include/generated/* $kerneldir/arch/${ARCH}/include/generated/ fi } # We don't need to stage anything, not the modules/firmware since those would clash with linux-firmware sysroot_stage_all () { : } KERNEL_CONFIG_COMMAND ?= "oe_runmake_call -C ${S} O=${B} oldnoconfig || yes '' | oe_runmake -C ${S} O=${B} oldconfig" python check_oldest_kernel() { oldest_kernel = d.getVar('OLDEST_KERNEL', True) kernel_version = d.getVar('KERNEL_VERSION', True) tclibc = d.getVar('TCLIBC', True) if tclibc == 'glibc': kernel_version = kernel_version.split('-', 1)[0] if oldest_kernel and kernel_version: if bb.utils.vercmp_string(kernel_version, oldest_kernel) < 0: bb.warn('%s: OLDEST_KERNEL is "%s" but the version of the kernel you are building is "%s" - therefore %s as built may not be compatible with this kernel. Either set OLDEST_KERNEL to an older version, or build a newer kernel.' % (d.getVar('PN', True), oldest_kernel, kernel_version, tclibc)) } check_oldest_kernel[vardepsexclude] += "OLDEST_KERNEL KERNEL_VERSION" do_configure[prefuncs] += "check_oldest_kernel" kernel_do_configure() { # fixes extra + in /lib/modules/2.6.37+ # $ scripts/setlocalversion . => + # $ make kernelversion => 2.6.37 # $ make kernelrelease => 2.6.37+ touch ${B}/.scmversion ${S}/.scmversion if [ "${S}" != "${B}" ] && [ -f "${S}/.config" ] && [ ! -f "${B}/.config" ]; then mv "${S}/.config" "${B}/.config" fi # Copy defconfig to .config if .config does not exist. This allows # recipes to manage the .config themselves in do_configure_prepend(). if [ -f "${WORKDIR}/defconfig" ] && [ ! -f "${B}/.config" ]; then cp "${WORKDIR}/defconfig" "${B}/.config" fi ${KERNEL_CONFIG_COMMAND} } do_savedefconfig() { oe_runmake -C ${B} savedefconfig } do_savedefconfig[nostamp] = "1" addtask savedefconfig after do_configure inherit cml1 EXPORT_FUNCTIONS do_compile do_install do_configure # kernel-base becomes kernel-${KERNEL_VERSION} # kernel-image becomes kernel-image-${KERNEL_VERSION} PACKAGES = "kernel kernel-base kernel-vmlinux kernel-image kernel-dev kernel-modules" FILES_${PN} = "" FILES_kernel-base = "/lib/modules/${KERNEL_VERSION}/modules.order /lib/modules/${KERNEL_VERSION}/modules.builtin" FILES_kernel-image = "/boot/${KERNEL_IMAGETYPE}*" FILES_kernel-dev = "/boot/System.map* /boot/Module.symvers* /boot/config* ${KERNEL_SRC_PATH} /lib/modules/${KERNEL_VERSION}/build" FILES_kernel-vmlinux = "/boot/vmlinux*" FILES_kernel-modules = "" RDEPENDS_kernel = "kernel-base" # Allow machines to override this dependency if kernel image files are # not wanted in images as standard RDEPENDS_kernel-base ?= "kernel-image" PKG_kernel-image = "kernel-image-${@legitimize_package_name('${KERNEL_VERSION}')}" RDEPENDS_kernel-image += "${@base_conditional('KERNEL_IMAGETYPE', 'vmlinux', 'kernel-vmlinux', '', d)}" PKG_kernel-base = "kernel-${@legitimize_package_name('${KERNEL_VERSION}')}" RPROVIDES_kernel-base += "kernel-${KERNEL_VERSION}" ALLOW_EMPTY_kernel = "1" ALLOW_EMPTY_kernel-base = "1" ALLOW_EMPTY_kernel-image = "1" ALLOW_EMPTY_kernel-modules = "1" DESCRIPTION_kernel-modules = "Kernel modules meta package" pkg_postinst_kernel-base () { if [ ! -e "$D/lib/modules/${KERNEL_VERSION}" ]; then mkdir -p $D/lib/modules/${KERNEL_VERSION} fi if [ -n "$D" ]; then depmodwrapper -a -b $D ${KERNEL_VERSION} else depmod -a ${KERNEL_VERSION} fi } pkg_postinst_kernel-image () { update-alternatives --install /${KERNEL_IMAGEDEST}/${KERNEL_IMAGETYPE} ${KERNEL_IMAGETYPE} /${KERNEL_IMAGEDEST}/${KERNEL_IMAGETYPE}-${KERNEL_VERSION} ${KERNEL_PRIORITY} || true } pkg_postrm_kernel-image () { update-alternatives --remove ${KERNEL_IMAGETYPE} ${KERNEL_IMAGETYPE}-${KERNEL_VERSION} || true } PACKAGESPLITFUNCS_prepend = "split_kernel_packages " python split_kernel_packages () { do_split_packages(d, root='/lib/firmware', file_regex='^(.*)\.(bin|fw|cis|csp|dsp)$', output_pattern='kernel-firmware-%s', description='Firmware for %s', recursive=True, extra_depends='') } # Many scripts want to look in arch/$arch/boot for the bootable # image. This poses a problem for vmlinux based booting. This # task arranges to have vmlinux appear in the normalized directory # location. do_kernel_link_vmlinux() { if [ ! -d "${B}/arch/${ARCH}/boot" ]; then mkdir ${B}/arch/${ARCH}/boot fi cd ${B}/arch/${ARCH}/boot ln -sf ../../../vmlinux } do_strip() { if [ -n "${KERNEL_IMAGE_STRIP_EXTRA_SECTIONS}" ]; then if [ "${KERNEL_IMAGETYPE}" != "vmlinux" ]; then bbwarn "image type will not be stripped (not supported): ${KERNEL_IMAGETYPE}" return fi cd ${B} headers=`"$CROSS_COMPILE"readelf -S ${KERNEL_OUTPUT} | \ grep "^ \{1,\}\[[0-9 ]\{1,\}\] [^ ]" | \ sed "s/^ \{1,\}\[[0-9 ]\{1,\}\] //" | \ gawk '{print $1}'` for str in ${KERNEL_IMAGE_STRIP_EXTRA_SECTIONS}; do { if ! (echo "$headers" | grep -q "^$str$"); then bbwarn "Section not found: $str"; fi "$CROSS_COMPILE"strip -s -R $str ${KERNEL_OUTPUT} }; done bbnote "KERNEL_IMAGE_STRIP_EXTRA_SECTIONS is set, stripping sections:" \ "${KERNEL_IMAGE_STRIP_EXTRA_SECTIONS}" fi; } do_strip[dirs] = "${B}" addtask do_strip before do_sizecheck after do_kernel_link_vmlinux # Support checking the kernel size since some kernels need to reside in partitions # with a fixed length or there is a limit in transferring the kernel to memory do_sizecheck() { if [ ! -z "${KERNEL_IMAGE_MAXSIZE}" ]; then invalid=`echo ${KERNEL_IMAGE_MAXSIZE} | sed 's/[0-9]//g'` if [ -n "$invalid" ]; then die "Invalid KERNEL_IMAGE_MAXSIZE: ${KERNEL_IMAGE_MAXSIZE}, should be an integerx (The unit is Kbytes)" fi size=`du -ks ${B}/${KERNEL_OUTPUT} | awk '{ print $1}'` if [ $size -ge ${KERNEL_IMAGE_MAXSIZE} ]; then die "This kernel (size=$size(K) > ${KERNEL_IMAGE_MAXSIZE}(K)) is too big for your device. Please reduce the size of the kernel by making more of it modular." fi fi } do_sizecheck[dirs] = "${B}" addtask sizecheck before do_install after do_strip KERNEL_IMAGE_BASE_NAME ?= "${KERNEL_IMAGETYPE}-${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}" # Don't include the DATETIME variable in the sstate package signatures KERNEL_IMAGE_BASE_NAME[vardepsexclude] = "DATETIME" KERNEL_IMAGE_SYMLINK_NAME ?= "${KERNEL_IMAGETYPE}-${MACHINE}" MODULE_IMAGE_BASE_NAME ?= "modules-${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}" MODULE_IMAGE_BASE_NAME[vardepsexclude] = "DATETIME" MODULE_TARBALL_BASE_NAME ?= "${MODULE_IMAGE_BASE_NAME}.tgz" # Don't include the DATETIME variable in the sstate package signatures MODULE_TARBALL_SYMLINK_NAME ?= "modules-${MACHINE}.tgz" MODULE_TARBALL_DEPLOY ?= "1" kernel_do_deploy() { install -m 0644 ${KERNEL_OUTPUT} ${DEPLOYDIR}/${KERNEL_IMAGE_BASE_NAME}.bin if [ ${MODULE_TARBALL_DEPLOY} = "1" ] && (grep -q -i -e '^CONFIG_MODULES=y$' .config); then mkdir -p ${D}/lib tar -cvzf ${DEPLOYDIR}/${MODULE_TARBALL_BASE_NAME} -C ${D} lib ln -sf ${MODULE_TARBALL_BASE_NAME} ${DEPLOYDIR}/${MODULE_TARBALL_SYMLINK_NAME} fi ln -sf ${KERNEL_IMAGE_BASE_NAME}.bin ${DEPLOYDIR}/${KERNEL_IMAGE_SYMLINK_NAME}.bin ln -sf ${KERNEL_IMAGE_BASE_NAME}.bin ${DEPLOYDIR}/${KERNEL_IMAGETYPE} cp ${COREBASE}/meta/files/deploydir_readme.txt ${DEPLOYDIR}/README_-_DO_NOT_DELETE_FILES_IN_THIS_DIRECTORY.txt cd ${B} # Update deploy directory if [ -e "${KERNEL_OUTPUT}.initramfs" ]; then echo "Copying deploy kernel-initramfs image and setting up links..." initramfs_base_name=${INITRAMFS_BASE_NAME} initramfs_symlink_name=${KERNEL_IMAGETYPE}-initramfs-${MACHINE} install -m 0644 ${KERNEL_OUTPUT}.initramfs ${DEPLOYDIR}/${initramfs_base_name}.bin cd ${DEPLOYDIR} ln -sf ${initramfs_base_name}.bin ${initramfs_symlink_name}.bin fi } do_deploy[cleandirs] = "${DEPLOYDIR}" do_deploy[dirs] = "${DEPLOYDIR} ${B}" do_deploy[prefuncs] += "package_get_auto_pr" addtask deploy after do_populate_sysroot EXPORT_FUNCTIONS do_deploy