DESCRIPTION = "Linux Kernel"
SECTION = "kernel"
LICENSE = "GPLv2"
LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"

INC_PR = "r0"

inherit kernel siteinfo

# Enable OABI compat for people stuck with obsolete userspace
ARM_KEEP_OABI ?= "0"

# 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 ?= "loglevel=3"

# Kernel bootlogo is distro-specific (default is OE logo).
# Logo resolution (qvga, vga, ...) is machine-specific.
LOGO_SIZE ?= '${@base_conditional("MACHINE_GUI_CLASS", "bigscreen", "vga", "qvga", d)}'
# To use this, add file://${LOGO_SIZE}/logo_linux_clut224.ppm.bz2 or similar
# to your kernel recipe, and then structure your logos for each resolution
# accordingly.

LOCALVERSION ?= ""

#kernel_conf_variable CMDLINE "\"${CMDLINE} ${CMDLINE_DEBUG}\""
kernel_conf_variable() {
	CONF_SED_SCRIPT="$CONF_SED_SCRIPT /CONFIG_$1[ =]/d;"
	if test "$2" = "n"
	then
		echo "# CONFIG_$1 is not set" >> ${S}/.config
	else
		echo "CONFIG_$1=$2" >> ${S}/.config
	fi
}

do_configure_prepend() {
        echo "" > ${S}/.config
	CONF_SED_SCRIPT=""

        #
        # logo support, if you supply logo_linux_clut224.ppm in SRC_URI, then it's going to be used
        #
        if [ -e ${WORKDIR}/logo_linux_clut224.ppm ]; then
                install -m 0644 ${WORKDIR}/logo_linux_clut224.ppm drivers/video/logo/logo_linux_clut224.ppm
		kernel_conf_variable LOGO y
		kernel_conf_variable LOGO_LINUX_CLUT224 y
        fi

        #
        # oabi / eabi support
        #
	kernel_conf_variable AEABI y
	if [ "${ARM_KEEP_OABI}" = "1" ] ; then
		kernel_conf_variable OABI_COMPAT y
	else
		kernel_conf_variable OABI_COMPAT n
	fi

        # When enabling thumb for userspace we also need thumb support in the kernel
        if [ "${ARM_INSTRUCTION_SET}" = "thumb" ] ; then
		kernel_conf_variable ARM_THUMB y
        fi

	kernel_conf_variable CMDLINE "\"${CMDLINE} ${CMDLINE_DEBUG}\""

	kernel_conf_variable LOCALVERSION "\"${LOCALVERSION}\""
	kernel_conf_variable LOCALVERSION_AUTO n

	kernel_conf_variable SYSFS_DEPRECATED n
	kernel_conf_variable SYSFS_DEPRECATED_V2 n
        kernel_conf_variable HOTPLUG y
        kernel_conf_variable UEVENT_HELPER_PATH \"\"
        kernel_conf_variable UNIX y
        kernel_conf_variable SYSFS y
        kernel_conf_variable PROC_FS y
        kernel_conf_variable TMPFS y
        kernel_conf_variable INOTIFY_USER y
        kernel_conf_variable SIGNALFD y
        kernel_conf_variable TMPFS_POSIX_ACL y
        kernel_conf_variable BLK_DEV_BSG y
        kernel_conf_variable DEVTMPFS y
        kernel_conf_variable DEVTMPFS_MOUNT y

        # Newer inits like systemd need cgroup support
        if [ "${KERNEL_ENABLE_CGROUPS}" = "1" ] ; then
            kernel_conf_variable CGROUP_SCHED y
            kernel_conf_variable CGROUPS y
            kernel_conf_variable CGROUP_NS y
            kernel_conf_variable CGROUP_FREEZER y
            kernel_conf_variable CGROUP_DEVICE y
            kernel_conf_variable CPUSETS y
            kernel_conf_variable PROC_PID_CPUSET y
            kernel_conf_variable CGROUP_CPUACCT y
            kernel_conf_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
                bbnote "Configuring the kernel for root-over-nfs-over-usb-eth with CMDLINE ${CMDLINE_NFSROOT_USB}"
                kernel_conf_variable INET y
                kernel_conf_variable IP_PNP y
                kernel_conf_variable USB_GADGET y
                kernel_conf_variable USB_GADGET_SELECTED y
                kernel_conf_variable USB_ETH y
                kernel_conf_variable NFS_FS y
                kernel_conf_variable ROOT_NFS y
                kernel_conf_variable CMDLINE \"${CMDLINE_NFSROOT_USB} ${CMDLINE_DEBUG}\"
        fi

        sed -e "${CONF_SED_SCRIPT}" \
		< '${WORKDIR}/defconfig' >>'${S}/.config'

	yes '' | oe_runmake oldconfig
}

do_configure_append() {
        if test -e scripts/Makefile.fwinst ; then
		sed -i -e "s:-m0644:-m 0644:g" scripts/Makefile.fwinst
	fi
}

do_install_append() {
	oe_runmake headers_install INSTALL_HDR_PATH=${D}${exec_prefix}/src/linux-${KERNEL_VERSION} ARCH=$ARCH
}

PACKAGES =+ "kernel-headers"
FILES_kernel-headers = "${exec_prefix}/src/linux*"
