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citadel/poky/meta/classes/kernel.bbclass

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inherit linux-kernel-base kernel-module-split
PROVIDES += "virtual/kernel"
DEPENDS += "virtual/${TARGET_PREFIX}binutils virtual/${TARGET_PREFIX}gcc kmod-native bc-native lzop-native"
PACKAGE_WRITE_DEPS += "depmodwrapper-cross"
do_deploy[depends] += "depmodwrapper-cross:do_populate_sysroot"
CVE_PRODUCT ?= "linux_kernel"
S = "${STAGING_KERNEL_DIR}"
B = "${WORKDIR}/build"
KBUILD_OUTPUT = "${B}"
OE_TERMINAL_EXPORTS += "KBUILD_OUTPUT"
# we include gcc above, we dont need virtual/libc
INHIBIT_DEFAULT_DEPS = "1"
KERNEL_IMAGETYPE ?= "zImage"
INITRAMFS_IMAGE ?= ""
INITRAMFS_IMAGE_NAME ?= "${@['${INITRAMFS_IMAGE}-${MACHINE}', ''][d.getVar('INITRAMFS_IMAGE') == '']}"
INITRAMFS_TASK ?= ""
INITRAMFS_IMAGE_BUNDLE ?= ""
# KERNEL_VERSION is extracted from source code. It is evaluated as
# None for the first parsing, since the code has not been fetched.
# After the code is fetched, it will be evaluated as real version
# number and cause kernel to be rebuilt. To avoid this, make
# KERNEL_VERSION_NAME and KERNEL_VERSION_PKG_NAME depend on
# LINUX_VERSION which is a constant.
KERNEL_VERSION_NAME = "${@d.getVar('KERNEL_VERSION') or ""}"
KERNEL_VERSION_NAME[vardepvalue] = "${LINUX_VERSION}"
KERNEL_VERSION_PKG_NAME = "${@legitimize_package_name(d.getVar('KERNEL_VERSION'))}"
KERNEL_VERSION_PKG_NAME[vardepvalue] = "${LINUX_VERSION}"
python __anonymous () {
# Merge KERNEL_IMAGETYPE and KERNEL_ALT_IMAGETYPE into KERNEL_IMAGETYPES
type = d.getVar('KERNEL_IMAGETYPE') or ""
alttype = d.getVar('KERNEL_ALT_IMAGETYPE') or ""
types = d.getVar('KERNEL_IMAGETYPES') or ""
if type not in types.split():
types = (type + ' ' + types).strip()
if alttype not in types.split():
types = (alttype + ' ' + types).strip()
d.setVar('KERNEL_IMAGETYPES', types)
# some commonly used kernel images aren't generated by the kernel build system, such as vmlinux.gz
# typeformake lists only valid kernel make targets, and post processing can be done after the kernel
# is built (such as using gzip to compress vmlinux)
typeformake = types.replace('vmlinux.gz', 'vmlinux')
d.setVar('KERNEL_IMAGETYPE_FOR_MAKE', typeformake)
for type in types.split():
typelower = type.lower()
imagedest = d.getVar('KERNEL_IMAGEDEST')
d.appendVar('PACKAGES', ' ' + 'kernel-image-' + typelower)
d.setVar('FILES_kernel-image-' + typelower, '/' + imagedest + '/' + type + '-${KERNEL_VERSION_NAME}' + ' /' + imagedest + '/' + type)
d.appendVar('RDEPENDS_kernel-image', ' ' + 'kernel-image-' + typelower)
d.setVar('PKG_kernel-image-' + typelower, 'kernel-image-' + typelower + '-${KERNEL_VERSION_PKG_NAME}')
d.setVar('ALLOW_EMPTY_kernel-image-' + typelower, '1')
image = d.getVar('INITRAMFS_IMAGE')
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')
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} ${STAGING_KERNEL_BUILDDIR}"
base_do_unpack_append () {
s = d.getVar("S")
if s[-1] == '/':
# drop trailing slash, so that os.symlink(kernsrc, s) doesn't use s as directory name and fail
s=s[:-1]
kernsrc = d.getVar("STAGING_KERNEL_DIR")
if s != kernsrc:
bb.utils.mkdirhier(kernsrc)
bb.utils.remove(kernsrc, recurse=True)
if d.getVar("EXTERNALSRC"):
# With EXTERNALSRC S will not be wiped so we can symlink to it
os.symlink(s, kernsrc)
else:
import shutil
shutil.move(s, kernsrc)
os.symlink(kernsrc, s)
}
inherit kernel-arch deploy
PACKAGES_DYNAMIC += "^kernel-module-.*"
PACKAGES_DYNAMIC += "^kernel-image-.*"
PACKAGES_DYNAMIC += "^kernel-firmware-.*"
export OS = "${TARGET_OS}"
export CROSS_COMPILE = "${TARGET_PREFIX}"
export KBUILD_BUILD_USER = "oe-user"
export KBUILD_BUILD_HOST = "oe-host"
KERNEL_RELEASE ?= "${KERNEL_VERSION}"
# The directory where built kernel lies in the kernel tree
KERNEL_OUTPUT_DIR ?= "arch/${ARCH}/boot"
KERNEL_IMAGEDEST = "boot"
#
# configuration
#
export CMDLINE_CONSOLE = "console=${@d.getVar("KERNEL_CONSOLE") 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 ?= ""
EXTRA_OEMAKE = " HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" HOSTCPP="${BUILD_CPP}""
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_NAME}.cpio
for img in cpio cpio.gz cpio.lz4 cpio.lzo cpio.lzma cpio.xz; do
if [ -e "${DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.$img" ]; then
cp ${DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.$img ${B}/usr/.
case $img in
*gz)
echo "gzip decompressing image"
gunzip -f ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
break
;;
*lz4)
echo "lz4 decompressing image"
lz4 -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
break
;;
*lzo)
echo "lzo decompressing image"
lzop -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
break
;;
*lzma)
echo "lzma decompressing image"
lzma -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
break
;;
*xz)
echo "xz decompressing image"
xz -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
break
;;
esac
fi
done
echo "Finished copy of initramfs into ./usr"
}
INITRAMFS_BASE_NAME ?= "initramfs-${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
# Backing up kernel image relies on its type(regular file or symbolic link)
tmp_path=""
for type in ${KERNEL_IMAGETYPES} ; do
if [ -h ${KERNEL_OUTPUT_DIR}/$type ] ; then
linkpath=`readlink -n ${KERNEL_OUTPUT_DIR}/$type`
realpath=`readlink -fn ${KERNEL_OUTPUT_DIR}/$type`
mv -f $realpath $realpath.bak
tmp_path=$tmp_path" "$type"#"$linkpath"#"$realpath
elif [ -f ${KERNEL_OUTPUT_DIR}/$type ]; then
mv -f ${KERNEL_OUTPUT_DIR}/$type ${KERNEL_OUTPUT_DIR}/$type.bak
tmp_path=$tmp_path" "$type"##"
fi
done
use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio
kernel_do_compile
# Restoring kernel image
for tp in $tmp_path ; do
type=`echo $tp|cut -d "#" -f 1`
linkpath=`echo $tp|cut -d "#" -f 2`
realpath=`echo $tp|cut -d "#" -f 3`
if [ -n "$realpath" ]; then
mv -f $realpath $realpath.initramfs
mv -f $realpath.bak $realpath
ln -sf $linkpath.initramfs ${B}/${KERNEL_OUTPUT_DIR}/$type.initramfs
else
mv -f ${KERNEL_OUTPUT_DIR}/$type ${KERNEL_OUTPUT_DIR}/$type.initramfs
mv -f ${KERNEL_OUTPUT_DIR}/$type.bak ${KERNEL_OUTPUT_DIR}/$type
fi
done
fi
}
do_bundle_initramfs[dirs] = "${B}"
python do_devshell_prepend () {
os.environ["LDFLAGS"] = ''
}
addtask bundle_initramfs after do_install before do_deploy
get_cc_option () {
# Check if KERNEL_CC supports the option "file-prefix-map".
# This option allows us to build images with __FILE__ values that do not
# contain the host build path.
if ${KERNEL_CC} -Q --help=joined | grep -q "\-ffile-prefix-map=<old=new>"; then
echo "-ffile-prefix-map=${S}=/kernel-source/"
fi
}
kernel_do_compile() {
unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
if [ "$BUILD_REPRODUCIBLE_BINARIES" = "1" ]; then
# kernel sources do not use do_unpack, so SOURCE_DATE_EPOCH may not
# be set....
if [ "$SOURCE_DATE_EPOCH" = "0" ]; then
olddir=`pwd`
cd ${S}
SOURCE_DATE_EPOCH=`git log -1 --pretty=%ct`
# git repo not guaranteed, so fall back to REPRODUCIBLE_TIMESTAMP_ROOTFS
if [ $? -ne 0 ]; then
SOURCE_DATE_EPOCH=${REPRODUCIBLE_TIMESTAMP_ROOTFS}
fi
cd $olddir
fi
ts=`LC_ALL=C date -d @$SOURCE_DATE_EPOCH`
export KBUILD_BUILD_TIMESTAMP="$ts"
export KCONFIG_NOTIMESTAMP=1
bbnote "KBUILD_BUILD_TIMESTAMP: $ts"
fi
# 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/${INITRAMFS_IMAGE_NAME}.cpio
fi
cc_extra=$(get_cc_option)
for typeformake in ${KERNEL_IMAGETYPE_FOR_MAKE} ; do
oe_runmake ${typeformake} CC="${KERNEL_CC} $cc_extra " LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS} $use_alternate_initrd
done
# vmlinux.gz is not built by kernel
if (echo "${KERNEL_IMAGETYPES}" | grep -wq "vmlinux\.gz"); then
mkdir -p "${KERNEL_OUTPUT_DIR}"
gzip -9cn < ${B}/vmlinux > "${KERNEL_OUTPUT_DIR}/vmlinux.gz"
fi
}
do_compile_kernelmodules() {
unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
if (grep -q -i -e '^CONFIG_MODULES=y$' ${B}/.config); then
cc_extra=$(get_cc_option)
oe_runmake -C ${B} ${PARALLEL_MAKE} modules CC="${KERNEL_CC} $cc_extra " LD="${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 ${B}/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 MODLIB=${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION} INSTALL_FW_PATH=${D}${nonarch_base_libdir}/firmware modules_install
rm "${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION}/build"
rm "${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION}/source"
# If the kernel/ directory is empty remove it to prevent QA issues
rmdir --ignore-fail-on-non-empty "${D}${nonarch_base_libdir}/modules/${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
for type in ${KERNEL_IMAGETYPES} ; do
install -m 0644 ${KERNEL_OUTPUT_DIR}/${type} ${D}/${KERNEL_IMAGEDEST}/${type}-${KERNEL_VERSION}
ln -sf ${type}-${KERNEL_VERSION} ${D}/${KERNEL_IMAGEDEST}/${type}
done
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"
# Must be ran no earlier than after do_kernel_checkout or else Makefile won't be in ${S}/Makefile
do_kernel_version_sanity_check() {
if [ "x${KERNEL_VERSION_SANITY_SKIP}" = "x1" ]; then
exit 0
fi
# The Makefile determines the kernel version shown at runtime
# Don't use KERNEL_VERSION because the headers it grabs the version from aren't generated until do_compile
VERSION=$(grep "^VERSION =" ${S}/Makefile | sed s/.*=\ *//)
PATCHLEVEL=$(grep "^PATCHLEVEL =" ${S}/Makefile | sed s/.*=\ *//)
SUBLEVEL=$(grep "^SUBLEVEL =" ${S}/Makefile | sed s/.*=\ *//)
EXTRAVERSION=$(grep "^EXTRAVERSION =" ${S}/Makefile | sed s/.*=\ *//)
# Build a string for regex and a plain version string
reg="^${VERSION}\.${PATCHLEVEL}"
vers="${VERSION}.${PATCHLEVEL}"
if [ -n "${SUBLEVEL}" ]; then
# Ignoring a SUBLEVEL of zero is fine
if [ "${SUBLEVEL}" = "0" ]; then
reg="${reg}(\.${SUBLEVEL})?"
else
reg="${reg}\.${SUBLEVEL}"
vers="${vers}.${SUBLEVEL}"
fi
fi
vers="${vers}${EXTRAVERSION}"
reg="${reg}${EXTRAVERSION}"
if [ -z `echo ${PV} | grep -E "${reg}"` ]; then
bbfatal "Package Version (${PV}) does not match of kernel being built (${vers}). Please update the PV variable to match the kernel source or set KERNEL_VERSION_SANITY_SKIP=\"1\" in your recipe."
fi
exit 0
}
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
if [ -e certs/signing_key.pem ]; then
# The signing_key.* files are stored in the certs/ dir in
# newer Linux kernels
mkdir -p $kerneldir/certs
cp certs/signing_key.* $kerneldir/certs/
elif [ -e signing_key.priv ]; then
cp signing_key.* $kerneldir/
fi
# 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')
kernel_version = d.getVar('KERNEL_VERSION')
tclibc = d.getVar('TCLIBC')
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'), 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
${KERNEL_CONFIG_COMMAND}
}
do_savedefconfig() {
bbplain "Saving defconfig to:\n${B}/defconfig"
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 = "${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.order ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.builtin"
FILES_kernel-image = ""
FILES_kernel-dev = "/boot/System.map* /boot/Module.symvers* /boot/config* ${KERNEL_SRC_PATH} ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/build"
FILES_kernel-vmlinux = "/boot/vmlinux-${KERNEL_VERSION_NAME}"
FILES_kernel-modules = ""
RDEPENDS_kernel = "kernel-base"
# Allow machines to override this dependency if kernel image files are
# not wanted in images as standard
RDEPENDS_kernel-base ?= "kernel-image"
PKG_kernel-image = "kernel-image-${@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 ${KERNEL_VERSION}
fi
}
PACKAGESPLITFUNCS_prepend = "split_kernel_packages "
python split_kernel_packages () {
do_split_packages(d, root='${nonarch_base_libdir}/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 and vmlinuz based
# booting. This task arranges to have vmlinux and vmlinuz appear
# in the normalized directory location.
do_kernel_link_images() {
if [ ! -d "${B}/arch/${ARCH}/boot" ]; then
mkdir ${B}/arch/${ARCH}/boot
fi
cd ${B}/arch/${ARCH}/boot
ln -sf ../../../vmlinux
if [ -f ../../../vmlinuz ]; then
ln -sf ../../../vmlinuz
fi
if [ -f ../../../vmlinuz.bin ]; then
ln -sf ../../../vmlinuz.bin
fi
}
addtask kernel_link_images after do_compile before do_strip
do_strip() {
if [ -n "${KERNEL_IMAGE_STRIP_EXTRA_SECTIONS}" ]; then
if ! (echo "${KERNEL_IMAGETYPES}" | grep -wq "vmlinux"); then
bbwarn "image type(s) will not be stripped (not supported): ${KERNEL_IMAGETYPES}"
return
fi
cd ${B}
headers=`"$CROSS_COMPILE"readelf -S ${KERNEL_OUTPUT_DIR}/vmlinux | \
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 ${KERNEL_OUTPUT_DIR}/vmlinux
}; done
bbnote "KERNEL_IMAGE_STRIP_EXTRA_SECTIONS is set, stripping sections:" \
"${KERNEL_IMAGE_STRIP_EXTRA_SECTIONS}"
fi;
}
do_strip[dirs] = "${B}"
addtask strip before do_sizecheck after do_kernel_link_images
# Support checking the kernel size since some kernels need to reside in partitions
# with a fixed length or there is a limit in transferring the kernel to memory
do_sizecheck() {
if [ ! -z "${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
for type in ${KERNEL_IMAGETYPES} ; do
size=`du -ks ${B}/${KERNEL_OUTPUT_DIR}/$type | awk '{print $1}'`
if [ $size -ge ${KERNEL_IMAGE_MAXSIZE} ]; then
warn "This kernel $type (size=$size(K) > ${KERNEL_IMAGE_MAXSIZE}(K)) is too big for your device. Please reduce the size of the kernel by making more of it modular."
fi
done
fi
}
do_sizecheck[dirs] = "${B}"
addtask sizecheck before do_install after do_strip
KERNEL_IMAGE_BASE_NAME ?= "${PKGE}-${PKGV}-${PKGR}-${MACHINE}-${DATETIME}"
# Don't include the DATETIME variable in the sstate package signatures
KERNEL_IMAGE_BASE_NAME[vardepsexclude] = "DATETIME"
KERNEL_IMAGE_SYMLINK_NAME ?= "${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() {
for type in ${KERNEL_IMAGETYPES} ; do
base_name=${type}-${KERNEL_IMAGE_BASE_NAME}
install -m 0644 ${KERNEL_OUTPUT_DIR}/${type} ${DEPLOYDIR}/${base_name}.bin
done
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
for type in ${KERNEL_IMAGETYPES} ; do
base_name=${type}-${KERNEL_IMAGE_BASE_NAME}
symlink_name=${type}-${KERNEL_IMAGE_SYMLINK_NAME}
ln -sf ${base_name}.bin ${DEPLOYDIR}/${symlink_name}.bin
ln -sf ${base_name}.bin ${DEPLOYDIR}/${type}
done
cd ${B}
# Update deploy directory
for type in ${KERNEL_IMAGETYPES} ; do
if [ -e "${KERNEL_OUTPUT_DIR}/${type}.initramfs" ]; then
echo "Copying deploy ${type} kernel-initramfs image and setting up links..."
initramfs_base_name=${type}-${INITRAMFS_BASE_NAME}
initramfs_symlink_name=${type}-initramfs-${MACHINE}
install -m 0644 ${KERNEL_OUTPUT_DIR}/${type}.initramfs ${DEPLOYDIR}/${initramfs_base_name}.bin
ln -sf ${initramfs_base_name}.bin ${DEPLOYDIR}/${initramfs_symlink_name}.bin
fi
done
}
do_deploy[cleandirs] = "${DEPLOYDIR}"
do_deploy[dirs] = "${DEPLOYDIR} ${B}"
do_deploy[prefuncs] += "package_get_auto_pr"
addtask deploy after do_populate_sysroot do_packagedata
EXPORT_FUNCTIONS do_deploy
# Add using Device Tree support
inherit kernel-devicetree
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