sys-kernel/chromeos-kernel/chromeos-kernel-0.0.1-r461.ebuild - mirrors/cros/chromiumos/overlays/chromiumos-overlay - Git at Google

 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 # Distributed under the terms of the GNU General Public License v2

 EAPI=4
 CROS_WORKON_COMMIT="64c457758e9b2dfa360134d7f2fce4632eede9c2"
 CROS_WORKON_PROJECT="chromiumos/third_party/kernel"

 inherit toolchain-funcs
 inherit binutils-funcs

 DESCRIPTION="Chrome OS Kernel"
 HOMEPAGE="http://www.chromium.org/"
 LICENSE="GPL-2"
 SLOT="0"
 KEYWORDS="amd64 arm x86"
 IUSE_KCONFIG="+kconfig_generic kconfig_atom kconfig_atom64 kconfig_tegra2"
 IUSE="-fbconsole -initramfs -nfs -blkdevram ${IUSE_KCONFIG} -device_tree"
 IUSE="${IUSE} -pcserial -kernel_sources -systemtap"
 REQUIRED_USE="^^ ( ${IUSE_KCONFIG/+} )"
 STRIP_MASK="/usr/lib/debug/boot/vmlinux"

 DEPEND="sys-apps/debianutils
     chromeos-base/kernel-headers
     initramfs? ( chromeos-base/chromeos-initramfs )
     !sys-kernel/chromeos-kernel-next
 "
 RDEPEND="!sys-kernel/chromeos-kernel-next"

 vmlinux_text_base=${CHROMEOS_U_BOOT_VMLINUX_TEXT_BASE:-0x20008000}

 # TODO(vbendeb): we might need to be able to define the device tree source
 # name by some other means or to override the default. For now it must match
 # the name/board name.
 dev_tree_base=${PKG_CONFIG#pkg-config-}

 # Use a single or split kernel config as specified in the board or variant
 # make.conf overlay. Default to the arch specific split config if an
 # overlay or variant does not set either CHROMEOS_KERNEL_CONFIG or
 # CHROMEOS_KERNEL_SPLITCONFIG. CHROMEOS_KERNEL_CONFIG is set relative
 # to the root of the kernel source tree.

 if [ -n "${CHROMEOS_KERNEL_CONFIG}" ]; then
 	config="${S}/${CHROMEOS_KERNEL_CONFIG}"
 else
 	if [ "${ARCH}" = "x86" ]; then
 		config=${CHROMEOS_KERNEL_SPLITCONFIG:-"chromeos-intel-menlow"}
 	else
 		config=${CHROMEOS_KERNEL_SPLITCONFIG:-"chromeos-${ARCH}"}
 	fi
 fi

 # TODO(jglasgow) Need to fix DEPS file to get rid of "files"
 CROS_WORKON_LOCALNAME="../third_party/kernel/files"

 # This must be inherited *after* EGIT/CROS_WORKON variables defined
 inherit cros-workon

 # Allow override of kernel arch.
 kernel_arch=${CHROMEOS_KERNEL_ARCH:-"$(tc-arch-kernel)"}

 cross=${CHOST}-
 COMPILER_OPTS=""
 # Hack for using 64-bit kernel with 32-bit user-space
 if [ "${ARCH}" = "x86" -a "${kernel_arch}" = "x86_64" ]; then
 	cross=${CBUILD}-
 else
 	# TODO(raymes): Force GNU ld over gold. There are still some
 	# gold issues to iron out. See: 13209.
 	tc-export LD CC CXX
 	COMPILER_OPTS="LD=\"$(get_binutils_path_ld)/ld\""
 	COMPILER_OPTS+=" CC=\"${CC} -B$(get_binutils_path_ld)\""
 	COMPILER_OPTS+=" CXX=\"${CXX} -B$(get_binutils_path_ld)\""
 fi

 build_dir="${S}/build/$(basename ${ROOT})"
 bin_dtb="${build_dir}/device-tree.dtb"
 build_cfg="${build_dir}/.config"

 src_configure() {
 	mkdir -p "${build_dir}"

 	elog "Using kernel config: ${config}"

 	if [ -n "${CHROMEOS_KERNEL_CONFIG}" ]; then
 		cp -f "${config}" "${build_cfg}" || die
 	else
 		chromeos/scripts/prepareconfig ${config} || die
 		mv .config "${build_cfg}"
 	fi

 	if use blkdevram; then
 		elog "   - adding ram block device config"
 		cat "${FILESDIR}"/blkdevram.config >> "${build_cfg}"
 	fi

 	if use fbconsole; then
 		elog "   - adding framebuffer console config"
 		cat "${FILESDIR}"/fbconsole.config >> "${build_cfg}"
 	fi

 	if use nfs; then
 		elog "   - adding NFS config"
 		cat "${FILESDIR}"/nfs.config >> "${build_cfg}"
 	fi
 	if use systemtap; then
 		elog "	- adding configs to support systemtap"
 		cat "${FILESDIR}"/systemtap.config >> "${build_cfg}"
 	fi

 	if use pcserial; then
 		elog "   - adding PC serial config"
 		cat "${FILESDIR}"/pcserial.config >> "${build_cfg}"
 	fi

 	# Use default for any options not explitly set in splitconfig
 	yes "" | eval emake \
 		${COMPILER_OPTS} \
 		ARCH=${kernel_arch} \
 		O="${build_dir}" \
 		oldconfig || die
 }

 src_compile() {

 	if use arm; then
 		build_targets='uImage  modules'
 	else
 		build_targets=  # use make default target
 	fi

 	if use initramfs; then
 		INITRAMFS="CONFIG_INITRAMFS_SOURCE=${ROOT}/usr/bin/initramfs.cpio.gz"
 		# We want avoid copying modules into the initramfs so we need to enable
 		# the functionality required for the initramfs here.

 		# TPM support to ensure proper locking.
 		INITRAMFS="$INITRAMFS CONFIG_TCG_TPM=y CONFIG_TCG_TIS=y"

 		# VFAT FS support for EFI System Partition updates.
 		INITRAMFS="$INITRAMFS CONFIG_NLS_CODEPAGE_437=y"
 		INITRAMFS="$INITRAMFS CONFIG_NLS_ISO8859_1=y"
 		INITRAMFS="$INITRAMFS CONFIG_FAT_FS=y CONFIG_VFAT_FS=y"
 	else
 		INITRAMFS=""
 	fi
 	eval emake ${COMPILER_OPTS} \
 		$INITRAMFS \
 		ARCH=${kernel_arch} \
 		O="${build_dir}" \
 		CROSS_COMPILE="${cross}" ${build_targets} || die

 	if use device_tree; then
 		dtc  -O dtb -p 500 -o "${bin_dtb}" \
 		  "arch/arm/boot/dts/${dev_tree_base}.dts" || \
 		  die 'Device tree compilation failed'
 	fi
 }

 # Install the kernel sources into usr/src and fix symlinks.
 install_kernel_sources() {
 	local version="$(ls "${D}"/lib/modules)"
 	local dest_modules_dir="lib/modules/${version}"
 	local dest_source_dir="usr/src/${P}"
 	local dest_build_dir="${dest_source_dir}/build"

 	# Fix symlinks in lib/modules
 	ln -sfvT "../../../${dest_build_dir}" "${D}/${dest_modules_dir}/build" || die
 	ln -sfvT "../../../${dest_source_dir}" "${D}/${dest_modules_dir}/source" || die

 	einfo "Installing kernel source tree"
 	dodir "${dest_source_dir}" || die
 	rsync -a --exclude "build" "${S}/" "${D}/${dest_source_dir}" || die

 	einfo "Installing kernel build tree"
 	dodir "${dest_build_dir}" || die
 	cp -a "${build_dir}"/{.config,.version,Makefile,Module.symvers,include} \
 		"${D}/${dest_build_dir}" || die

 	# Modify Makefile to use the ROOT environment variable if defined.
 	# This path needs to be absolute so that the build directory will
 	# still work if copied elsewhere.
 	sed -i -e "s@${S}@\$(ROOT)/${dest_source_dir}@" \
 		"${D}/${dest_build_dir}/Makefile" || die
 }

 src_install() {
 	dodir boot

 	eval emake ${COMPILER_OPTS} \
 		ARCH=${kernel_arch}\
 		CROSS_COMPILE="${cross}" \
 		INSTALL_PATH="${D}/boot" \
 		O="${build_dir}" \
 		install || die

 	eval emake ${COMPILER_OPTS} \
 		ARCH=${kernel_arch}\
 		CROSS_COMPILE="${cross}" \
 		INSTALL_MOD_PATH="${D}" \
 		O="${build_dir}" \
 		modules_install || die

 	eval emake ${COMPILER_OPTS} \
 		ARCH=${kernel_arch}\
 		CROSS_COMPILE="${cross}" \
 		INSTALL_MOD_PATH="${D}" \
 		O="${build_dir}" \
 		firmware_install || die

 	if use arm; then
 		local version=$(ls "${D}"/lib/modules)
 		local boot_dir="${build_dir}/arch/${ARCH}/boot"
 		local kernel_bin="${D}/boot/vmlinuz-${version}"
 		local load_addr=0x01000000
 		if use device_tree; then
 			local its_script="${build_dir}/its_script"
 			sed "s|%BUILD_ROOT%|${boot_dir}|;\
 			     s|%DEV_TREE%|${bin_dtb}|; \
 			     s|%LOAD_ADDR%|${load_addr}|;" \
 			  "${FILESDIR}/kernel_fdt.its" > "${its_script}" || die
 			mkimage  -f "${its_script}" "${kernel_bin}" || die
 		else
 			cp -a "${boot_dir}/uImage" "${kernel_bin}" || die
 		fi

 		# TODO(vbendeb): remove the below .uimg link creation code
 		# after the build scripts have been modified to use the base
 		# image name.
 		cd $(dirname "${kernel_bin}")
 		ln -sf $(basename "${kernel_bin}") vmlinux.uimg || die
 	fi

 	# Install uncompressed kernel for debugging purposes.
 	dodir /usr/lib/debug/boot
 	insinto /usr/lib/debug/boot
 	doins "${build_dir}/vmlinux"

 	if use kernel_sources; then
 		install_kernel_sources
 	fi
 }
	# Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
	# Distributed under the terms of the GNU General Public License v2

	EAPI=4
	CROS_WORKON_COMMIT="64c457758e9b2dfa360134d7f2fce4632eede9c2"
	CROS_WORKON_PROJECT="chromiumos/third_party/kernel"

	inherit toolchain-funcs
	inherit binutils-funcs

	DESCRIPTION="Chrome OS Kernel"
	HOMEPAGE="http://www.chromium.org/"
	LICENSE="GPL-2"
	SLOT="0"
	KEYWORDS="amd64 arm x86"
	IUSE_KCONFIG="+kconfig_generic kconfig_atom kconfig_atom64 kconfig_tegra2"
	IUSE="-fbconsole -initramfs -nfs -blkdevram ${IUSE_KCONFIG} -device_tree"
	IUSE="${IUSE} -pcserial -kernel_sources -systemtap"
	REQUIRED_USE="^^ ( ${IUSE_KCONFIG/+} )"
	STRIP_MASK="/usr/lib/debug/boot/vmlinux"

	DEPEND="sys-apps/debianutils
	chromeos-base/kernel-headers
	initramfs? ( chromeos-base/chromeos-initramfs )
	!sys-kernel/chromeos-kernel-next
	"
	RDEPEND="!sys-kernel/chromeos-kernel-next"

	vmlinux_text_base=${CHROMEOS_U_BOOT_VMLINUX_TEXT_BASE:-0x20008000}

	# TODO(vbendeb): we might need to be able to define the device tree source
	# name by some other means or to override the default. For now it must match
	# the name/board name.
	dev_tree_base=${PKG_CONFIG#pkg-config-}

	# Use a single or split kernel config as specified in the board or variant
	# make.conf overlay. Default to the arch specific split config if an
	# overlay or variant does not set either CHROMEOS_KERNEL_CONFIG or
	# CHROMEOS_KERNEL_SPLITCONFIG. CHROMEOS_KERNEL_CONFIG is set relative
	# to the root of the kernel source tree.

	if [ -n "${CHROMEOS_KERNEL_CONFIG}" ]; then
	config="${S}/${CHROMEOS_KERNEL_CONFIG}"
	else
	if [ "${ARCH}" = "x86" ]; then
	config=${CHROMEOS_KERNEL_SPLITCONFIG:-"chromeos-intel-menlow"}
	else
	config=${CHROMEOS_KERNEL_SPLITCONFIG:-"chromeos-${ARCH}"}
	fi
	fi

	# TODO(jglasgow) Need to fix DEPS file to get rid of "files"
	CROS_WORKON_LOCALNAME="../third_party/kernel/files"

	# This must be inherited after EGIT/CROS_WORKON variables defined
	inherit cros-workon

	# Allow override of kernel arch.
	kernel_arch=${CHROMEOS_KERNEL_ARCH:-"$(tc-arch-kernel)"}

	cross=${CHOST}-
	COMPILER_OPTS=""
	# Hack for using 64-bit kernel with 32-bit user-space
	if [ "${ARCH}" = "x86" -a "${kernel_arch}" = "x86_64" ]; then
	cross=${CBUILD}-
	else
	# TODO(raymes): Force GNU ld over gold. There are still some
	# gold issues to iron out. See: 13209.
	tc-export LD CC CXX
	COMPILER_OPTS="LD=\"$(get_binutils_path_ld)/ld\""
	COMPILER_OPTS+=" CC=\"${CC} -B$(get_binutils_path_ld)\""
	COMPILER_OPTS+=" CXX=\"${CXX} -B$(get_binutils_path_ld)\""
	fi

	build_dir="${S}/build/$(basename ${ROOT})"
	bin_dtb="${build_dir}/device-tree.dtb"
	build_cfg="${build_dir}/.config"

	src_configure() {
	mkdir -p "${build_dir}"

	elog "Using kernel config: ${config}"

	if [ -n "${CHROMEOS_KERNEL_CONFIG}" ]; then
	cp -f "${config}" "${build_cfg}" \|\| die
	else
	chromeos/scripts/prepareconfig ${config} \|\| die
	mv .config "${build_cfg}"
	fi

	if use blkdevram; then
	elog " - adding ram block device config"
	cat "${FILESDIR}"/blkdevram.config >> "${build_cfg}"
	fi

	if use fbconsole; then
	elog " - adding framebuffer console config"
	cat "${FILESDIR}"/fbconsole.config >> "${build_cfg}"
	fi

	if use nfs; then
	elog " - adding NFS config"
	cat "${FILESDIR}"/nfs.config >> "${build_cfg}"
	fi
	if use systemtap; then
	elog " - adding configs to support systemtap"
	cat "${FILESDIR}"/systemtap.config >> "${build_cfg}"
	fi

	if use pcserial; then
	elog " - adding PC serial config"
	cat "${FILESDIR}"/pcserial.config >> "${build_cfg}"
	fi

	# Use default for any options not explitly set in splitconfig
	yes "" \| eval emake \
	${COMPILER_OPTS} \
	ARCH=${kernel_arch} \
	O="${build_dir}" \
	oldconfig \|\| die
	}

	src_compile() {

	if use arm; then
	build_targets='uImage modules'
	else
	build_targets= # use make default target
	fi

	if use initramfs; then
	INITRAMFS="CONFIG_INITRAMFS_SOURCE=${ROOT}/usr/bin/initramfs.cpio.gz"
	# We want avoid copying modules into the initramfs so we need to enable
	# the functionality required for the initramfs here.

	# TPM support to ensure proper locking.
	INITRAMFS="$INITRAMFS CONFIG_TCG_TPM=y CONFIG_TCG_TIS=y"

	# VFAT FS support for EFI System Partition updates.
	INITRAMFS="$INITRAMFS CONFIG_NLS_CODEPAGE_437=y"
	INITRAMFS="$INITRAMFS CONFIG_NLS_ISO8859_1=y"
	INITRAMFS="$INITRAMFS CONFIG_FAT_FS=y CONFIG_VFAT_FS=y"
	else
	INITRAMFS=""
	fi
	eval emake ${COMPILER_OPTS} \
	$INITRAMFS \
	ARCH=${kernel_arch} \
	O="${build_dir}" \
	CROSS_COMPILE="${cross}" ${build_targets} \|\| die

	if use device_tree; then
	dtc -O dtb -p 500 -o "${bin_dtb}" \
	"arch/arm/boot/dts/${dev_tree_base}.dts" \|\| \
	die 'Device tree compilation failed'
	fi
	}

	# Install the kernel sources into usr/src and fix symlinks.
	install_kernel_sources() {
	local version="$(ls "${D}"/lib/modules)"
	local dest_modules_dir="lib/modules/${version}"
	local dest_source_dir="usr/src/${P}"
	local dest_build_dir="${dest_source_dir}/build"

	# Fix symlinks in lib/modules
	ln -sfvT "../../../${dest_build_dir}" "${D}/${dest_modules_dir}/build" \|\| die
	ln -sfvT "../../../${dest_source_dir}" "${D}/${dest_modules_dir}/source" \|\| die

	einfo "Installing kernel source tree"
	dodir "${dest_source_dir}" \|\| die
	rsync -a --exclude "build" "${S}/" "${D}/${dest_source_dir}" \|\| die

	einfo "Installing kernel build tree"
	dodir "${dest_build_dir}" \|\| die
	cp -a "${build_dir}"/{.config,.version,Makefile,Module.symvers,include} \
	"${D}/${dest_build_dir}" \|\| die

	# Modify Makefile to use the ROOT environment variable if defined.
	# This path needs to be absolute so that the build directory will
	# still work if copied elsewhere.
	sed -i -e "s@${S}@\$(ROOT)/${dest_source_dir}@" \
	"${D}/${dest_build_dir}/Makefile" \|\| die
	}

	src_install() {
	dodir boot

	eval emake ${COMPILER_OPTS} \
	ARCH=${kernel_arch}\
	CROSS_COMPILE="${cross}" \
	INSTALL_PATH="${D}/boot" \
	O="${build_dir}" \
	install \|\| die

	eval emake ${COMPILER_OPTS} \
	ARCH=${kernel_arch}\
	CROSS_COMPILE="${cross}" \
	INSTALL_MOD_PATH="${D}" \
	O="${build_dir}" \
	modules_install \|\| die

	eval emake ${COMPILER_OPTS} \
	ARCH=${kernel_arch}\
	CROSS_COMPILE="${cross}" \
	INSTALL_MOD_PATH="${D}" \
	O="${build_dir}" \
	firmware_install \|\| die

	if use arm; then
	local version=$(ls "${D}"/lib/modules)
	local boot_dir="${build_dir}/arch/${ARCH}/boot"
	local kernel_bin="${D}/boot/vmlinuz-${version}"
	local load_addr=0x01000000
	if use device_tree; then
	local its_script="${build_dir}/its_script"
	sed "s\|%BUILD_ROOT%\|${boot_dir}\|;\
	s\|%DEV_TREE%\|${bin_dtb}\|; \
	s\|%LOAD_ADDR%\|${load_addr}\|;" \
	"${FILESDIR}/kernel_fdt.its" > "${its_script}" \|\| die
	mkimage -f "${its_script}" "${kernel_bin}" \|\| die
	else
	cp -a "${boot_dir}/uImage" "${kernel_bin}" \|\| die
	fi

	# TODO(vbendeb): remove the below .uimg link creation code
	# after the build scripts have been modified to use the base
	# image name.
	cd $(dirname "${kernel_bin}")
	ln -sf $(basename "${kernel_bin}") vmlinux.uimg \|\| die
	fi

	# Install uncompressed kernel for debugging purposes.
	dodir /usr/lib/debug/boot
	insinto /usr/lib/debug/boot
	doins "${build_dir}/vmlinux"

	if use kernel_sources; then
	install_kernel_sources
	fi
	}