From mboxrd@z Thu Jan 1 00:00:00 1970 X-GM-THRID: 6520199916203016192 X-Received: by 10.25.223.65 with SMTP id q1mr146037lfj.30.1518110581821; Thu, 08 Feb 2018 09:23:01 -0800 (PST) X-BeenThere: isar-users@googlegroups.com Received: by 10.25.44.194 with SMTP id s185ls240411lfs.15.gmail; Thu, 08 Feb 2018 09:23:01 -0800 (PST) X-Google-Smtp-Source: AH8x225QWgG3nKP943TV5ekSqa5S17z6LzZNUhM+MKKGhj8D/erxc0qCVxH6Nr+ltSloXvny9EeC X-Received: by 10.25.157.193 with SMTP id g184mr141191lfe.37.1518110581036; Thu, 08 Feb 2018 09:23:01 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1518110580; cv=none; d=google.com; s=arc-20160816; b=UGmHwkEMj5sH5UUliqimlz8vGWfJ8VaqCSoOhAnhpu2CSCUDnsEvGi2UstqSDf0/AL pozzpeALLPsHNJUhS5Z3l+uqvzvNffUa7WFIQEA9P8rdLVBjHT3jZp5nsgEzhAOButjc m9Wh/SmZtY8Blu6yO/A7G2EJkS6En8LL+6YCBTHe/tYjxBs8rZIvv99j4PgXGwrmnTpS ckG9DoDSeZw3izxLMxR8g//66X8kTLo3q4XF63tgsSUohF/Y0w76ITJEeq56AXd+GpoT l8M3CmPvBP76JsJRHmix3rGjIN33PoCOBtLQwj7g33KhW2NmHagGfgipP7TRMwcVvCTE YHWQ== 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=SazjGXEG9JWBsTqtdfr+S+bEoRdFdNTqOeBICwwYIGM=; b=MFkQSHShRIFZwICs7Q8cChPVnt2qfhgC8T5pob5hMnaoWNegX/7oHpNmYZCy7DRVfc 1lNlc6NtVb/3R2RkHE4FkFc2oEbPgcjq/QMs79R1e9OP+TgatuoTfXKYAGVr6U0CXwAG Lxyd/7AQd9rVBZ+08Txwa0DCxD1Ni2hgJsBn63+J4PWzIfzB93A2XvFE073YHiL9+5h+ oW1uZz+AKxs95KxAIhm0a0v5Bsq3yjGfqe34WjzD6mZj/frsPsh3oRTxfC9D6VsalQKY ARhd6u5N7hyLVowGQU5n7FZdR13wxVuyMJQ28AzQMPzbBSHudkUknvEGn6ecRUwOtjyE PjdA== 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 z10si25879lfj.3.2018.02.08.09.23.00 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 08 Feb 2018 09:23:00 -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 mail2.siemens.de (mail2.siemens.de [139.25.208.11]) by goliath.siemens.de (8.15.2/8.15.2) with ESMTPS id w18HN0uP014750 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Thu, 8 Feb 2018 18:23:00 +0100 Received: from md1f2u6c.ad001.siemens.net (md1q0hnc.ad001.siemens.net [139.25.68.37] (may be forged)) by mail2.siemens.de (8.15.2/8.15.2) with ESMTP id w18HMxfj025766 for ; Thu, 8 Feb 2018 18:22:59 +0100 From: Jan Kiszka To: isar-users Subject: [PATCH v2 5/8] Provide include file for easy custom kernel builds Date: Thu, 8 Feb 2018 18:22:56 +0100 Message-Id: <8ee0db162e27f31b64bc17eaf00d24f7b488806e.1518110579.git.jan.kiszka@siemens.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: References: In-Reply-To: References: X-TUID: 9xMHZzH+9SGO 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 | 98 ++++++++++++++++++++++++++++++ 1 file changed, 98 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..feb96a1 --- /dev/null +++ b/meta/recipes-kernel/linux/linux-custom.inc @@ -0,0 +1,98 @@ +# Custom kernel recipe include +# +# This software is a part of ISAR. +# Copyright (c) Siemens AG, 2018 +# +# SPDX-License-Identifier: MIT + +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