M7350/oe-core/meta/classes/kernel.bbclass
2024-09-09 08:57:42 +00:00

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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 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 () {
kerneltype = d.getVar('KERNEL_IMAGETYPE', True)
if kerneltype == 'uImage':
depends = d.getVar("DEPENDS", True)
depends = "%s u-boot-mkimage-native" % depends
d.setVar("DEPENDS", depends)
image = d.getVar('INITRAMFS_IMAGE', True)
if image:
d.appendVarFlag('do_bundle_initramfs', 'depends', ' ${INITRAMFS_IMAGE}:do_rootfs')
# 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}')
}
# 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)
import subprocess
subprocess.call(d.expand("mv ${S} ${STAGING_KERNEL_DIR}"), shell=True)
os.symlink(kernsrc, s)
}
inherit kernel-arch deploy
PACKAGES_DYNAMIC += "^kernel-module-.*"
PACKAGES_DYNAMIC += "^kernel-image-.*"
PACKAGES_DYNAMIC += "^kernel-firmware-.*"
export OS = "${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 ??= ""
# Define where the kernel headers are installed on the target as well as where
# they are staged.
KERNEL_SRC_PATH = "/usr/src/kernel"
KERNEL_IMAGETYPE_FOR_MAKE = "${@(lambda s: s[:-3] if s[-3:] == ".gz" else s)(d.getVar('KERNEL_IMAGETYPE', True))}"
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}" > "${KERNEL_OUTPUT}"
fi
}
do_compile_kernelmodules() {
unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
if (grep -q -i -e '^CONFIG_MODULES=y$' .config); then
oe_runmake ${PARALLEL_MAKE} modules CC="${KERNEL_CC}" LD="${KERNEL_LD}" ${KERNEL_EXTRA_ARGS}
else
bbnote "no modules to compile"
fi
}
addtask compile_kernelmodules after do_compile before do_strip
kernel_do_install() {
#
# First install the modules
#
unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
if (grep -q -i -e '^CONFIG_MODULES=y$' .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_install
emit_depmod_pkgdata() {
# Stash data for depmod
install -d ${PKGDESTWORK}/kernel-depmod/
echo "${KERNEL_VERSION}" > ${PKGDESTWORK}/kernel-depmod/kernel-abiversion
cp 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
mkdir -p $kerneldir/include/generated/
cp -fR include/generated/* $kerneldir/include/generated/
if [ -d arch/${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"
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
eval ${KERNEL_CONFIG_COMMAND}
}
do_savedefconfig() {
oe_runmake savedefconfig
}
do_savedefconfig[nostamp] = "1"
addtask savedefconfig after do_configure
inherit cml1
EXPORT_FUNCTIONS do_compile do_install do_configure
# kernel-base becomes kernel-${KERNEL_VERSION}
# kernel-image becomes kernel-image-${KERNEL_VERISON}
PACKAGES = "kernel kernel-base kernel-vmlinux kernel-image kernel-dev kernel-modules"
FILES_${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}')}"
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|dsp)$', output_pattern='kernel-firmware-%s', description='Firmware for %s', recursive=True, extra_depends='')
}
do_strip() {
if [ -n "${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 ${KERNEL_IMAGE_STRIP_EXTRA_SECTIONS}; do {
if [ "$headers" != *"$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-${MACHINE}.tgz"
MODULE_TARBALL_DEPLOY ?= "1"
do_uboot_mkimage() {
if test "x${KERNEL_IMAGETYPE}" = "xuImage" ; then
if test "x${KEEPUIMAGE}" != "xyes" ; then
ENTRYPOINT=${UBOOT_ENTRYPOINT}
if test -n "${UBOOT_ENTRYSYMBOL}"; then
ENTRYPOINT=`${HOST_PREFIX}nm ${S}/vmlinux | \
awk '$3=="${UBOOT_ENTRYSYMBOL}" {print $1}'`
fi
if test -e arch/${ARCH}/boot/compressed/vmlinux ; then
${OBJCOPY} -O binary -R .note -R .comment -S arch/${ARCH}/boot/compressed/vmlinux linux.bin
uboot-mkimage -A ${UBOOT_ARCH} -O linux -T kernel -C none -a ${UBOOT_LOADADDRESS} -e $ENTRYPOINT -n "${DISTRO_NAME}/${PV}/${MACHINE}" -d linux.bin arch/${ARCH}/boot/uImage
rm -f linux.bin
else
${OBJCOPY} -O binary -R .note -R .comment -S vmlinux linux.bin
rm -f linux.bin.gz
gzip -9 linux.bin
uboot-mkimage -A ${UBOOT_ARCH} -O linux -T kernel -C gzip -a ${UBOOT_LOADADDRESS} -e $ENTRYPOINT -n "${DISTRO_NAME}/${PV}/${MACHINE}" -d linux.bin.gz arch/${ARCH}/boot/uImage
rm -f linux.bin.gz
fi
fi
fi
}
addtask uboot_mkimage before do_install after do_compile
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 ${initramfs_symlink_name}.bin
fi
}
do_deploy[dirs] = "${DEPLOYDIR} ${B}"
do_deploy[prefuncs] += "package_get_auto_pr"
addtask deploy after do_populate_sysroot
EXPORT_FUNCTIONS do_deploy