From 972dcfcdbfe75dcfeb777150c136576cf1a71e99 Mon Sep 17 00:00:00 2001 From: Tudor Florea Date: Fri, 9 Oct 2015 22:59:03 +0200 Subject: initial commit for Enea Linux 5.0 arm Signed-off-by: Tudor Florea --- meta/classes/kernel-yocto.bbclass | 361 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 361 insertions(+) create mode 100644 meta/classes/kernel-yocto.bbclass (limited to 'meta/classes/kernel-yocto.bbclass') diff --git a/meta/classes/kernel-yocto.bbclass b/meta/classes/kernel-yocto.bbclass new file mode 100644 index 0000000000..f42a5c2534 --- /dev/null +++ b/meta/classes/kernel-yocto.bbclass @@ -0,0 +1,361 @@ +S = "${WORKDIR}/linux" + +# remove tasks that modify the source tree in case externalsrc is inherited +SRCTREECOVEREDTASKS += "do_kernel_link_vmlinux do_kernel_configme do_validate_branches do_kernel_configcheck do_kernel_checkout do_patch" + +# returns local (absolute) path names for all valid patches in the +# src_uri +def find_patches(d): + patches = src_patches(d) + patch_list=[] + for p in patches: + _, _, local, _, _, _ = bb.fetch.decodeurl(p) + patch_list.append(local) + + return patch_list + +# returns all the elements from the src uri that are .scc files +def find_sccs(d): + sources=src_patches(d, True) + sources_list=[] + for s in sources: + base, ext = os.path.splitext(os.path.basename(s)) + if ext and ext in [".scc", ".cfg"]: + sources_list.append(s) + elif base and base in 'defconfig': + sources_list.append(s) + + return sources_list + +# check the SRC_URI for "kmeta" type'd git repositories. Return the name of +# the repository as it will be found in WORKDIR +def find_kernel_feature_dirs(d): + feature_dirs=[] + fetch = bb.fetch2.Fetch([], d) + for url in fetch.urls: + urldata = fetch.ud[url] + parm = urldata.parm + if "type" in parm: + type = parm["type"] + if "destsuffix" in parm: + destdir = parm["destsuffix"] + if type == "kmeta": + feature_dirs.append(destdir) + + return feature_dirs + +# find the master/machine source branch. In the same way that the fetcher proceses +# git repositories in the SRC_URI we take the first repo found, first branch. +def get_machine_branch(d, default): + fetch = bb.fetch2.Fetch([], d) + for url in fetch.urls: + urldata = fetch.ud[url] + parm = urldata.parm + if "branch" in parm: + branches = urldata.parm.get("branch").split(',') + return branches[0] + + return default + +do_patch() { + cd ${S} + export KMETA=${KMETA} + + # if kernel tools are available in-tree, they are preferred + # and are placed on the path before any external tools. Unless + # the external tools flag is set, in that case we do nothing. + if [ -f "${S}/scripts/util/configme" ]; then + if [ -z "${EXTERNAL_KERNEL_TOOLS}" ]; then + PATH=${S}/scripts/util:${PATH} + fi + fi + + machine_branch="${@ get_machine_branch(d, "${KBRANCH}" )}" + machine_srcrev="${SRCREV_machine}" + if [ -z "${machine_srcrev}" ]; then + # fallback to SRCREV if a non machine_meta tree is being built + machine_srcrev="${SRCREV}" + fi + + # if we have a defined/set meta branch we should not be generating + # any meta data. The passed branch has what we need. + if [ -n "${KMETA}" ]; then + createme_flags="--disable-meta-gen --meta ${KMETA}" + fi + + createme ${createme_flags} ${ARCH} ${machine_branch} + if [ $? -ne 0 ]; then + bbfatal "Could not create ${machine_branch}" + fi + + sccs="${@" ".join(find_sccs(d))}" + patches="${@" ".join(find_patches(d))}" + feat_dirs="${@" ".join(find_kernel_feature_dirs(d))}" + + set +e + # add any explicitly referenced features onto the end of the feature + # list that is passed to the kernel build scripts. + if [ -n "${KERNEL_FEATURES}" ]; then + for feat in ${KERNEL_FEATURES}; do + addon_features="$addon_features --feature $feat" + done + fi + + # check for feature directories/repos/branches that were part of the + # SRC_URI. If they were supplied, we convert them into include directives + # for the update part of the process + if [ -n "${feat_dirs}" ]; then + for f in ${feat_dirs}; do + if [ -d "${WORKDIR}/$f/meta" ]; then + includes="$includes -I${WORKDIR}/$f/meta" + elif [ -d "${WORKDIR}/$f" ]; then + includes="$includes -I${WORKDIR}/$f" + fi + done + fi + + # updates or generates the target description + updateme ${updateme_flags} -DKDESC=${KMACHINE}:${LINUX_KERNEL_TYPE} \ + ${includes} ${addon_features} ${ARCH} ${KMACHINE} ${sccs} ${patches} + if [ $? -ne 0 ]; then + bbfatal "Could not update ${machine_branch}" + fi + + # executes and modifies the source tree as required + patchme ${KMACHINE} + if [ $? -ne 0 ]; then + bberror "Could not apply patches for ${KMACHINE}." + bbfatal "Patch failures can be resolved in the devshell (bitbake -c devshell ${PN})" + fi + + # check to see if the specified SRCREV is reachable from the final branch. + # if it wasn't something wrong has happened, and we should error. + if [ "${machine_srcrev}" != "AUTOINC" ]; then + if ! [ "$(git rev-parse --verify ${machine_srcrev})" = "$(git merge-base ${machine_srcrev} HEAD)" ]; then + bberror "SRCREV ${machine_srcrev} was specified, but is not reachable" + bbfatal "Check the BSP description for incorrect branch selection, or other errors." + fi + fi +} + +do_kernel_checkout() { + set +e + + # A linux yocto SRC_URI should use the bareclone option. That + # ensures that all the branches are available in the WORKDIR version + # of the repository. + source_dir=`echo ${S} | sed 's%/$%%'` + source_workdir="${WORKDIR}/git" + if [ -d "${WORKDIR}/git/" ] && [ -d "${WORKDIR}/git/.git" ]; then + # case2: the repository is a non-bare clone + + # if S is WORKDIR/git, then we shouldn't be moving or deleting the tree. + if [ "${source_dir}" != "${source_workdir}" ]; then + rm -rf ${S} + mv ${WORKDIR}/git ${S} + fi + cd ${S} + elif [ -d "${WORKDIR}/git/" ] && [ ! -d "${WORKDIR}/git/.git" ]; then + # case2: the repository is a bare clone + + # if S is WORKDIR/git, then we shouldn't be moving or deleting the tree. + if [ "${source_dir}" != "${source_workdir}" ]; then + rm -rf ${S} + mkdir -p ${S}/.git + mv ${WORKDIR}/git/* ${S}/.git + rm -rf ${WORKDIR}/git/ + fi + cd ${S} + git config core.bare false + else + # case 3: we have no git repository at all. + # To support low bandwidth options for building the kernel, we'll just + # convert the tree to a git repo and let the rest of the process work unchanged + + # if ${S} hasn't been set to the proper subdirectory a default of "linux" is + # used, but we can't initialize that empty directory. So check it and throw a + # clear error + + cd ${S} + if [ ! -f "Makefile" ]; then + bberror "S is not set to the linux source directory. Check " + bbfatal "the recipe and set S to the proper extracted subdirectory" + fi + git init + git add . + git commit -q -m "baseline commit: creating repo for ${PN}-${PV}" + fi + # end debare + + # convert any remote branches to local tracking ones + for i in `git branch -a --no-color | grep remotes | grep -v HEAD`; do + b=`echo $i | cut -d' ' -f2 | sed 's%remotes/origin/%%'`; + git show-ref --quiet --verify -- "refs/heads/$b" + if [ $? -ne 0 ]; then + git branch $b $i > /dev/null + fi + done + + # If KMETA is defined, the branch must exist, but a machine branch + # can be missing since it may be created later by the tools. + if [ -n "${KMETA}" ]; then + git show-ref --quiet --verify -- "refs/heads/${KMETA}" + if [ $? -eq 1 ]; then + bberror "The branch '${KMETA}' is required and was not found" + bberror "Ensure that the SRC_URI points to a valid linux-yocto" + bbfatal "kernel repository" + fi + fi + + + # Create a working tree copy of the kernel by checking out a branch + machine_branch="${@ get_machine_branch(d, "${KBRANCH}" )}" + git show-ref --quiet --verify -- "refs/heads/${machine_branch}" + if [ $? -eq 0 ]; then + machine_branch="master" + fi + + # checkout and clobber any unimportant files + git checkout -f ${machine_branch} +} +do_kernel_checkout[dirs] = "${S}" + +addtask kernel_checkout before do_patch after do_unpack + +do_kernel_configme[dirs] += "${S} ${B}" +do_kernel_configme() { + bbnote "kernel configme" + export KMETA=${KMETA} + + if [ -n "${KCONFIG_MODE}" ]; then + configmeflags=${KCONFIG_MODE} + else + # If a defconfig was passed, use =n as the baseline, which is achieved + # via --allnoconfig + if [ -f ${WORKDIR}/defconfig ]; then + configmeflags="--allnoconfig" + fi + fi + + cd ${S} + PATH=${PATH}:${S}/scripts/util + configme ${configmeflags} --reconfig --output ${B} ${LINUX_KERNEL_TYPE} ${KMACHINE} + if [ $? -ne 0 ]; then + bbfatal "Could not configure ${KMACHINE}-${LINUX_KERNEL_TYPE}" + fi + + echo "# Global settings from linux recipe" >> ${B}/.config + echo "CONFIG_LOCALVERSION="\"${LINUX_VERSION_EXTENSION}\" >> ${B}/.config +} + +addtask kernel_configme after do_patch + +python do_kernel_configcheck() { + import re, string, sys + + bb.plain("NOTE: validating kernel config, see log.do_kernel_configcheck for details") + + # if KMETA isn't set globally by a recipe using this routine, we need to + # set the default to 'meta'. Otherwise, kconf_check is not passed a valid + # meta-series for processing + kmeta = d.getVar( "KMETA", True ) or "meta" + if not os.path.exists(kmeta): + kmeta = "." + kmeta + + pathprefix = "export PATH=%s:%s; " % (d.getVar('PATH', True), "${S}/scripts/util/") + cmd = d.expand("cd ${S}; kconf_check -config- %s/meta-series ${S} ${B}" % kmeta) + ret, result = oe.utils.getstatusoutput("%s%s" % (pathprefix, cmd)) + + config_check_visibility = d.getVar( "KCONF_AUDIT_LEVEL", True ) or 1 + if config_check_visibility == 1: + bb.debug( 1, "%s" % result ) + else: + bb.note( "%s" % result ) +} + +# Ensure that the branches (BSP and meta) are on the locations specified by +# their SRCREV values. If they are NOT on the right commits, the branches +# are corrected to the proper commit. +do_validate_branches() { + set +e + cd ${S} + export KMETA=${KMETA} + + machine_branch="${@ get_machine_branch(d, "${KBRANCH}" )}" + machine_srcrev="${SRCREV_machine}" + + # if SRCREV is AUTOREV it shows up as AUTOINC there's nothing to + # check and we can exit early + if [ "${machine_srcrev}" = "AUTOINC" ]; then + bbnote "SRCREV validation is not required for AUTOREV" + elif [ "${machine_srcrev}" = "" ] && [ "${SRCREV}" != "AUTOINC" ]; then + # SRCREV_machine_ was not set. This means that a custom recipe + # that doesn't use the SRCREV_FORMAT "machine_meta" is being built. In + # this case, we need to reset to the give SRCREV before heading to patching + bbnote "custom recipe is being built, forcing SRCREV to ${SRCREV}" + force_srcrev="${SRCREV}" + else + git cat-file -t ${machine_srcrev} > /dev/null + if [ $? -ne 0 ]; then + bberror "${machine_srcrev} is not a valid commit ID." + bbfatal "The kernel source tree may be out of sync" + fi + force_srcrev=${machine_srcrev} + fi + + ## KMETA branch validation. + target_meta_head="${SRCREV_meta}" + if [ "${target_meta_head}" = "AUTOINC" ] || [ "${target_meta_head}" = "" ]; then + bbnote "SRCREV validation skipped for AUTOREV or empty meta branch" + else + meta_head=`git show-ref -s --heads ${KMETA}` + + git cat-file -t ${target_meta_head} > /dev/null + if [ $? -ne 0 ]; then + bberror "${target_meta_head} is not a valid commit ID" + bbfatal "The kernel source tree may be out of sync" + fi + if [ "$meta_head" != "$target_meta_head" ]; then + bbnote "Setting branch ${KMETA} to ${target_meta_head}" + git branch -m ${KMETA} ${KMETA}-orig + git checkout -q -b ${KMETA} ${target_meta_head} + if [ $? -ne 0 ];then + bbfatal "Could not checkout ${KMETA} branch from known hash ${target_meta_head}" + fi + fi + fi + + git checkout -q -f ${machine_branch} + if [ -n "${force_srcrev}" ]; then + # see if the branch we are about to patch has been properly reset to the defined + # SRCREV .. if not, we reset it. + branch_head=`git rev-parse HEAD` + if [ "${force_srcrev}" != "${branch_head}" ]; then + current_branch=`git rev-parse --abbrev-ref HEAD` + git branch "$current_branch-orig" + git reset --hard ${force_srcrev} + fi + fi +} + +# Many scripts want to look in arch/$arch/boot for the bootable +# image. This poses a problem for vmlinux based booting. This +# task arranges to have vmlinux appear in the normalized directory +# location. +do_kernel_link_vmlinux() { + if [ ! -d "${B}/arch/${ARCH}/boot" ]; then + mkdir ${B}/arch/${ARCH}/boot + fi + cd ${B}/arch/${ARCH}/boot + ln -sf ../../../vmlinux +} + +OE_TERMINAL_EXPORTS += "GUILT_BASE KBUILD_OUTPUT" +GUILT_BASE = "meta" +KBUILD_OUTPUT = "${B}" + +python () { + # If diffconfig is available, ensure it runs after kernel_configme + if 'do_diffconfig' in d: + bb.build.addtask('do_diffconfig', None, 'do_kernel_configme', d) +} -- cgit v1.2.3-54-g00ecf