citadel/meta-citadel/recipes-kernel/citadel-kernel/citadel-kernel.inc
Bruce Leidl 95652721fc Use lz4 compression for kernel and initramfs
Boots faster but adds ~5mb to kernel+initrd bundle
2018-03-21 09:38:49 -04:00

60 lines
1.9 KiB
PHP

DESCRIPTION = "Citadel linux kernel"
SECTION = "kernel"
LICENSE = "GPLv2"
inherit kernel
LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
LINUX_VERSION ?= "${PV}"
LINUX_VERSION_EXTENSION_append = "-citadel"
SRC_URI = "https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-${LINUX_VERSION}.tar.xz;name=kernel"
SRC_URI += "https://github.com/minipli/linux-unofficial_grsec/releases/download/v${LINUX_VERSION}-unofficial_grsec/v${LINUX_VERSION}-unofficial_grsec-${PATCH_DATE_TAG}.diff;name=patch"
SRC_URI += " \
file://defconfig \
file://ignore-sysroot-for-plugin-build.patch \
file://0114-smpboot-reuse-timer-calibration.patch \
file://0116-Initialize-ata-before-graphics.patch \
"
S = "${WORKDIR}/linux-${LINUX_VERSION}"
do_deploy_append() {
rm ${DEPLOYDIR}/bzImage
ln -sf bzImage-initramfs${KERNEL_IMAGE_BASE_NAME}.bin ${DEPLOYDIR}/bzImage
}
#
# Replaces function with same name in kernel.bbclass since that implementation
# doesn't pass destination argument to lz4 in which case the decompressed output
# just disappears into thin air it seems.
#
copy_initramfs() {
echo "copy_initramfs override"
mkdir -p ${B}/usr
rm -f ${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio
cp ${DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.cpio.lz4 ${B}/usr/.
lz4 -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio.lz4 ${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio
ls -al ${B}/usr
echo "Finished copy of initramfs into ./usr"
}
# Don't install kernel into images, see kernel.bbclass
RDEPENDS_${KERNEL_PACKAGE_NAME}-base = ""
#
# https://github.com/96boards/meta-96boards/issues/81#issuecomment-311256044
# https://github.com/96boards/meta-96boards/blob/master/recipes-kernel/linux/linux-96boards_4.4.bb
#
# coreutils for /usr/bin/seq which pax size overflow gcc plugin uses
DEPENDS += "openssl-native coreutils-native lz4-native"
HOST_EXTRACFLAGS += "-I${STAGING_INCDIR_NATIVE}"
COMPATIBLE_MACHINE = "(intel-corei7-64)"