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DESCRIPTION = "Linux Kernel"
SECTION = "kernel"
LICENSE = "GPLv2"
LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
inherit kernel siteinfo
# Enable OABI compat for people stuck with obsolete userspace
ARM_KEEP_OABI ?= "1"
# Quirk for udev greater or equal 141
UDEV_GE_141 ?= "1"
# Enable cgroups support for systemd
KERNEL_ENABLE_CGROUPS ?= "1"
# combine oe-core way with angstrom DISTRO_TYPE
DISTRO_TYPE ?= "${@base_contains("IMAGE_FEATURES", "debug-tweaks", "debug", "release",d)}"
# Set the verbosity of kernel messages during runtime
# You can define CMDLINE_DEBUG in your local.conf or distro.conf to override this behaviour
CMDLINE_DEBUG ?= '${@base_conditional("DISTRO_TYPE", "release", "quiet", "debug", d)}'
CMDLINE_append = " ${CMDLINE_DEBUG}"
# Set a variable in .configure
# $1 - Configure variable to be set
# $2 - value [n/y/value]
kernel_configure_variable() {
# Remove the config
CONF_SED_SCRIPT="$CONF_SED_SCRIPT /CONFIG_$1[ =]/d;"
if test "$2" = "n"
then
echo "# CONFIG_$1 is not set" >> ${B}/.config
else
echo "CONFIG_$1=$2" >> ${B}/.config
fi
}
# returns all the elements from the src uri that are .cfg files
def find_cfgs(d):
sources=src_patches(d, True)
sources_list=[]
for s in sources:
if s.endswith('.cfg'):
sources_list.append(s)
return sources_list
do_configure_prepend() {
# Clean .config
echo "" > ${B}/.config
CONF_SED_SCRIPT=""
# oabi / eabi support
if [ "${TARGET_OS}" = "linux-gnueabi" -o "${TARGET_OS}" = "linux-uclibceabi" ]; then
kernel_configure_variable AEABI y
if [ "${ARM_KEEP_OABI}" = "1" ] ; then
kernel_configure_variable OABI_COMPAT y
else
kernel_configure_variable OABI_COMPAT n
fi
else
kernel_configure_variable AEABI n
kernel_configure_variable OABI_COMPAT n
fi
# Set cmdline
kernel_configure_variable CMDLINE "\"${CMDLINE}\""
# Localversion
kernel_configure_variable LOCALVERSION "\"\""
kernel_configure_variable LOCALVERSION_AUTO n
# Distribution-dependent kernel features
case "${DISTRO_FEATURES}" in
*bluetooth*) do_configure_bluetooth
esac
# Udev quirks
# Newer versions of udev mandate that sysfs doesn't have deprecated entries
if [ "${UDEV_GE_141}" = "1" ] ; then
kernel_configure_variable SYSFS_DEPRECATED n
kernel_configure_variable SYSFS_DEPRECATED_V2 n
kernel_configure_variable HOTPLUG y
kernel_configure_variable UEVENT_HELPER_PATH "\"\""
kernel_configure_variable UNIX y
kernel_configure_variable SYSFS y
kernel_configure_variable PROC_FS y
kernel_configure_variable TMPFS y
kernel_configure_variable INOTIFY_USER y
kernel_configure_variable SIGNALFD y
kernel_configure_variable TMPFS_POSIX_ACL y
kernel_configure_variable BLK_DEV_BSG y
kernel_configure_variable DEVTMPFS y
kernel_configure_variable DEVTMPFS_MOUNT y
fi
# Newer inits like systemd need cgroup support
if [ "${KERNEL_ENABLE_CGROUPS}" = "1" ] ; then
kernel_configure_variable CGROUP_SCHED y
kernel_configure_variable CGROUPS y
kernel_configure_variable CGROUP_NS y
kernel_configure_variable CGROUP_FREEZER y
kernel_configure_variable CGROUP_DEVICE y
kernel_configure_variable CPUSETS y
kernel_configure_variable PROC_PID_CPUSET y
kernel_configure_variable CGROUP_CPUACCT y
kernel_configure_variable RESOURCE_COUNTERS y
fi
# root-over-nfs-over-usb-eth support. Limited, but should cover some cases
# Enable this by setting a proper CMDLINE_NFSROOT_USB.
if [ ! -z "${CMDLINE_NFSROOT_USB}" ]; then
oenote "Configuring the kernel for root-over-nfs-over-usb-eth with CMDLINE ${CMDLINE_NFSROOT_USB}"
kernel_configure_variable INET y
kernel_configure_variable IP_PNP y
kernel_configure_variable USB_GADGET y
kernel_configure_variable USB_GADGET_SELECTED y
kernel_configure_variable USB_ETH y
kernel_configure_variable NFS_FS y
kernel_configure_variable ROOT_NFS y
kernel_configure_variable ROOT_NFS y
kernel_configure_variable CMDLINE "\"${CMDLINE_NFSROOT_USB}\""
fi
# Activate CONFIG_LEGACY_PTYS
kernel_configure_variable LEGACY_PTYS y
kernel_configure_variable LEGACY_PTY_COUNT 8
# needed for ttySC6 login on koelsch with systemd
kernel_configure_variable FHANDLE y
# needed for USB touchscreens
kernel_configure_variable HID_MULTITOUCH y
# additional configs needed for Genivi compliance
kernel_configure_variable EXPERIMENTAL y
kernel_configure_variable ECRYPT_FS y
kernel_configure_variable QUOTA y
kernel_configure_variable BT y
# add uinput for automated testing
kernel_configure_variable INPUT_MISC y
kernel_configure_variable INPUT_UINPUT y
# psplash only
kernel_configure_variable FRAMEBUFFER_CONSOLE n
kernel_configure_variable LOGO n
# systemd requires following
kernel_configure_variable AUTOFS4_FS y
kernel_configure_variable IPV6 y
kernel_configure_variable SCHEDSTATS y
# AGL spec. mentioned following
kernel_configure_variable EXT4_FS y
kernel_configure_variable FANOTIFY y
kernel_configure_variable POSIX_MQUEUE y
kernel_configure_variable TUN y
# For containers support (AGL spec v1.0, section 7.3.1)
kernel_configure_variable NAMESPACES y
kernel_configure_variable UTS_NS n
kernel_configure_variable IPC_NS y
kernel_configure_variable USER_NS y
kernel_configure_variable PID_NS y
kernel_configure_variable NET_NS y
# nbdroot support
kernel_configure_variable BLK_DEV_LOOP y
kernel_configure_variable BLK_DEV_NBD y
kernel_configure_variable BLK_DEV_INITRD y
kernel_configure_variable RD_GZIP y
kernel_configure_variable RD_BZIP2 y
kernel_configure_variable RD_XZ y
kernel_configure_variable EXT4_FS y
kernel_configure_variable EXT4_USE_FOR_EXT23 y
kernel_configure_variable BLK_DEV_RAM y
kernel_configure_variable BLK_DEV_RAM_COUNT 2
kernel_configure_variable BLK_DEV_RAM_SIZE 16384
# only when distro is built for debug
if [ "${DISTRO_TYPE}" = "debug" ]; then
kernel_configure_variable BLK_DEV_LOOP y
fi
if [ "x1" = "x${@base_contains("DISTRO_FEATURES", "usbgadget", "1", "",d)}" ]; then
# activate USB-OTG & Gadget
kernel_configure_variable USB_OTG y
kernel_configure_variable USB_RENESAS_USBHS_UDC y
kernel_configure_variable CONFIGFS_FS y
kernel_configure_variable USB_GADGET y
kernel_configure_variable USB_LIBCOMPOSITE y
kernel_configure_variable USB_F_ACM y
kernel_configure_variable USB_U_SERIAL y
kernel_configure_variable USB_ETH m
kernel_configure_variable USB_G_MULTI m
kernel_configure_variable USB_G_MULTI_RNDIS n
kernel_configure_variable USB_G_MULTI_CDC y
# ethernet over usb tethering
kernel_configure_variable NETFILTER y
kernel_configure_variable NF_CONNTRACK_IPV4 y
kernel_configure_variable NF_NAT_IPV4 y
kernel_configure_variable BRIDGE y
kernel_configure_variable IP_NF_TARGET_MASQUERADE y
fi
# Keep this the last line
# Remove all modified configs and add the rest to .config
sed -e "${CONF_SED_SCRIPT}" < '${WORKDIR}/defconfig' >> '${B}/.config'
# add cfgs from SRC_URI.
cfgs="${@" ".join(find_cfgs(d))}"
cat ${cfgs} >> '${B}/.config'
yes '' | oe_runmake -C ${S} O=${B} oldconfig
}
do_configure_bluetooth() {
# Needed for Bluetooth hardware support
kernel_configure_variable BT_HIDP y
kernel_configure_variable BT_HCIBTUSB m
kernel_configure_variable BT_BNEP m
kernel_configure_variable BT_BNEP_MC_FILTER y
kernel_configure_variable BT_BNEP_PROTO_FILTER y
kernel_configure_variable BT_RFCOMM m
kernel_configure_variable BT_RFCOMM_TTY y
kernel_configure_variable RFKILL m
}
# Automatically depend on lzop-native if CONFIG_KERNEL_LZO is enabled
python () {
try:
defconfig = bb.fetch2.localpath('file://defconfig', d)
except bb.fetch2.FetchError:
return
try:
configfile = open(defconfig)
except IOError:
return
if 'CONFIG_KERNEL_LZO=y\n' in configfile.readlines():
depends = d.getVar('DEPENDS', False)
d.setVar('DEPENDS', depends + ' lzop-native')
}
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