From mboxrd@z Thu Jan 1 00:00:00 1970 X-GM-THRID: 6520199916203016192 X-Received: by 10.80.201.74 with SMTP id p10mr493870edh.7.1518102343808; Thu, 08 Feb 2018 07:05:43 -0800 (PST) X-BeenThere: isar-users@googlegroups.com Received: by 10.80.169.98 with SMTP id m31ls2409814edc.0.gmail; Thu, 08 Feb 2018 07:05:43 -0800 (PST) X-Google-Smtp-Source: AH8x225e0SHXjzy7HGDTq2b6ayAyILkqlm5PHfOHhzuh7UKbUc1dBIq/EvgljhUG95IFJLBGAlAe X-Received: by 10.80.146.139 with SMTP id k11mr494915eda.4.1518102343248; Thu, 08 Feb 2018 07:05:43 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1518102343; cv=none; d=google.com; s=arc-20160816; b=bnEvtkjYclSvFM28m/eHHk8BDN3C8jojY6WuXgfiya/1Qcl5miRE9tsMwanAjKYCYf hU2yXUUvaoNSpRI9lI/Fg+J9E7pLliW98EelFcTf1A95WmtJzHSfqYdxmB7wapCHdSiI IpHtYkHeln0qhXkM3VG4fCBRQs9dOediXS9cFXUeQOg5/YAgg6P+cwKv5kEfFG2davya twurMjzP3RJe2Dvw/n0r8V1ihiAx3wDhqh+oqf08mG2CDURGoB0I/4JCifqyaosvtDBf Rhr2jdf8r3IDQdV7aKnkiEyJLEJNGrUK6/GtOrjjstADU2+y4iOjowcERRwghXE3BHm8 EnSw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:references:in-reply-to:message-id:date :subject:to:from:arc-authentication-results; bh=6/2w5n+kLDOfC2g+cHjYiiM0Q6xGNi2NZpxfIwQUfPo=; b=w2A65+RGWfFSMU/SqU6C/iGtyfMzSYf1CeJRottDDzfoT3r9c6TjdLImOwlFJGx/Z7 wP8AOCchi1xw54447QK/1e4fwXyMG21Usqqco6R5Xauyom5r5Q0rz2DlgDLK5u9jL0pd dYJUh8jywMDLmDNtqIWA+rwJtWBhigbPCC1stlx9qcu6xxq1wJf65MDpT+IMvTV4rX2q /14Zd3VFe416JZl+QODEqJcRYgIFolDxk47NABMF3o+P6If9OEJWmseiLXuisADih5m3 bMdl1KJLuhlVJVPNUa0qN8DBYeXjIoqepECkVr5UdWJdL0CpEQOst99+x9f7nVYmndbb cFbg== ARC-Authentication-Results: i=1; gmr-mx.google.com; spf=pass (google.com: domain of jan.kiszka@siemens.com designates 192.35.17.28 as permitted sender) smtp.mailfrom=jan.kiszka@siemens.com Return-Path: Received: from goliath.siemens.de (goliath.siemens.de. [192.35.17.28]) by gmr-mx.google.com with ESMTPS id t4si8052edt.2.2018.02.08.07.05.43 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 08 Feb 2018 07:05:43 -0800 (PST) Received-SPF: pass (google.com: domain of jan.kiszka@siemens.com designates 192.35.17.28 as permitted sender) client-ip=192.35.17.28; Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of jan.kiszka@siemens.com designates 192.35.17.28 as permitted sender) smtp.mailfrom=jan.kiszka@siemens.com Received: from mail1.siemens.de (mail1.siemens.de [139.23.33.14]) by goliath.siemens.de (8.15.2/8.15.2) with ESMTPS id w18F5giM014822 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Thu, 8 Feb 2018 16:05:42 +0100 Received: from md1f2u6c.ad001.siemens.net (md1q0hnc.ad001.siemens.net [139.25.68.37] (may be forged)) by mail1.siemens.de (8.15.2/8.15.2) with ESMTP id w18F5gac010454 for ; Thu, 8 Feb 2018 16:05:42 +0100 From: Jan Kiszka To: isar-users Subject: [PATCH 5/8] Provide include file for easy custom kernel builds Date: Thu, 8 Feb 2018 16:05:38 +0100 Message-Id: <5b13d82299fd22215a795143bd543c0cf24320ec.1518102341.git.jan.kiszka@siemens.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: References: In-Reply-To: References: X-TUID: GTWErr6DJY4u From: Jan Kiszka With this include file, it becomes almost trivial to replace the distro kernel with a custom build. You just need to include linux-custom.inc, specify the source URI, define via S where the source is unpacked to and provide a defconfig. To switch to a custom kernel recipe, PREFERRED_PROVIDER_virtual/kernel has to be adjusted in local.conf or the distro conf. The approach works internally by first running "make deb-pkg" on the kernel and the repackages the output to make the binary linux-image and linux-header debs act as replacement of their distro packages. This results in a suboptimal technical implementation which may eventually be replaced by an isar-implemented deb-pkg build process. However, this is not expected to affect the user-visible interface of this include file. Signed-off-by: Jan Kiszka --- meta/recipes-kernel/linux/linux-custom.inc | 91 ++++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 meta/recipes-kernel/linux/linux-custom.inc diff --git a/meta/recipes-kernel/linux/linux-custom.inc b/meta/recipes-kernel/linux/linux-custom.inc new file mode 100644 index 0000000..d487515 --- /dev/null +++ b/meta/recipes-kernel/linux/linux-custom.inc @@ -0,0 +1,91 @@ +DESCRIPTION ?= "Custom kernel" +PROVIDES = "virtual/kernel" + +inherit dpkg-base + +KERNEL_DEBIAN_DEPENDS = "initramfs-tools | linux-initramfs-tool, kmod, linux-base (>= 4.3~)" +KERNEL_HEADERS_DEBIAN_DEPENDS = "libc6, libssl1.1, gcc" +KBUILD_DEPENDS = "libssl-dev libelf-dev bc" + +REPACK_DIR = "${PP}/repack" +REPACK_LINUX_IMAGE_DIR = "${REPACK_DIR}/linux-image" +REPACK_LINUX_HEADERS_DIR = "${REPACK_DIR}/linux-headers" + +dpkg_runbuild() { + E="${@ bb.utils.export_proxies(d)}" + sudo -E chroot ${BUILDCHROOT_DIR} sh -c ' + set -e + + apt-get install -y -o Debug::pkgProblemResolver=yes \ + --no-install-recommends ${KBUILD_DEPENDS} + + cd ${PP}/${S} + cp ../defconfig .config + make olddefconfig + + make -j ${@bb.utils.cpu_count() * 2} deb-pkg + + rm -rf ${REPACK_DIR} + mkdir -p ${REPACK_DIR} + mkdir -p ${REPACK_LINUX_IMAGE_DIR} + mkdir -p ${REPACK_LINUX_HEADERS_DIR} + + cd ${PP} + tar xzf linux-${PV}_${PV}-1.debian.tar.gz -C ${REPACK_DIR} + dpkg-deb -R linux-image-${PV}_${PV}-1_${KERNEL_ARCH}.deb \ + ${REPACK_LINUX_IMAGE_DIR} + dpkg-deb -R linux-headers-${PV}_${PV}-1_${KERNEL_ARCH}.deb \ + ${REPACK_LINUX_HEADERS_DIR} + + dpkg-gencontrol -crepack/debian/control \ + -lrepack/debian/changelog \ + -frepack/debian/files \ + -plinux-image-${PV} \ + -P${REPACK_LINUX_IMAGE_DIR} \ + -DPackage="linux-image-${KERNEL_ARCH}" \ + -DSection=kernel \ + -DPriority=required \ + -DProvides="${PN}" \ + -DDepends="${KERNEL_DEBIAN_DEPENDS}" + + # Add Debian-like link installation to postinst + touch ${REPACK_LINUX_IMAGE_DIR}/lib/modules/${PV}/.fresh-install + sed -i ${REPACK_LINUX_IMAGE_DIR}/DEBIAN/postinst \ + -e "/^set -e$/a\\ +\\ +if [ -f /lib/modules/${PV}/.fresh-install ]; then\\ + change=install\\ +else\\ + change=upgrade\\ +fi\\ +linux-update-symlinks \$change ${PV} /boot/vmlinuz-${PV}\\ +rm -f /lib/modules/${PV}/.fresh-install" + + # Add Debian-like link removal to postrm + sed -i ${REPACK_LINUX_IMAGE_DIR}/DEBIAN/postrm \ + -e "/^set -e$/a\\ +\\ +rm -f /lib/modules/${PV}/.fresh-install\\ +\\ +if [ \"\$1\" != upgrade ] && command -v linux-update-symlinks >/dev/null; then\\ + linux-update-symlinks remove ${PV} /boot/vmlinuz-${PV}\\ +fi" + + dpkg-gencontrol -crepack/debian/control \ + -lrepack/debian/changelog \ + -frepack/debian/files \ + -plinux-headers-${PV} \ + -P${REPACK_LINUX_HEADERS_DIR} \ + -Vkernel:debarch="${KERNEL_ARCH}" \ + -DPackage="linux-headers-${KERNEL_ARCH}" \ + -DSection=kernel \ + -DDepends="${KERNEL_HEADERS_DEBIAN_DEPENDS}" + + dpkg-deb -b ${REPACK_LINUX_IMAGE_DIR} \ + linux-image-${KERNEL_ARCH}_${PV}-1_${KERNEL_ARCH}.deb + rm -f linux-image-${PV}_${PV}-1_${KERNEL_ARCH}.deb + dpkg-deb -b ${REPACK_LINUX_HEADERS_DIR} \ + linux-headers-${KERNEL_ARCH}_${PV}-1_${KERNEL_ARCH}.deb + rm -f linux-headers-${PV}_${PV}-1_${KERNEL_ARCH}.deb + ' +} -- 2.13.6