From c527fd1f14c27855a37f2e8ac5346ce8d940ced2 Mon Sep 17 00:00:00 2001 From: Tudor Florea Date: Thu, 16 Oct 2014 03:05:19 +0200 Subject: initial commit for Enea Linux 4.0-140929 Migrated from the internal git server on the daisy-enea-point-release branch Signed-off-by: Tudor Florea --- meta/classes/kernel-yocto.bbclass | 416 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 416 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..53bc6d443c --- /dev/null +++ b/meta/classes/kernel-yocto.bbclass @@ -0,0 +1,416 @@ +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}" )}" + + # 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 + echo "ERROR. Could not create ${machine_branch}" + exit 1 + fi + + sccs="${@" ".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}/$f" + fi + done + fi + + if [ "${machine_branch}" != "${KBRANCH_DEFAULT}" ]; then + updateme_flags="--branch ${machine_branch}" + 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 + echo "ERROR. Could not update ${machine_branch}" + exit 1 + fi + + # executes and modifies the source tree as required + patchme ${KMACHINE} + if [ $? -ne 0 ]; then + echo "ERROR. Could not apply patches for ${KMACHINE}." + echo " Patch failures can be resolved in the devshell (bitbake -c devshell ${PN})" + exit 1 + fi + + # Perform a final check. If something other than the default kernel + # branch was requested, and that's not where we ended up, then we + # should thrown an error, since we aren't building what was expected + final_branch="$(git symbolic-ref HEAD 2>/dev/null)" + final_branch=${final_branch##refs/heads/} + if [ "${machine_branch}" != "${KBRANCH_DEFAULT}" ] && + [ "${final_branch}" != "${machine_branch}" ]; then + echo "ERROR: branch ${machine_branch} was requested, but was not properly" + echo " configured to be built. The current branch is ${final_branch}" + exit 1 + 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 + echo "[ERROR]: S is not set to the linux source directory. Check " + echo " the recipe and set S to the proper extracted subdirectory" + exit 1 + fi + git init + git add . + git commit -q -m "baseline commit: creating repo for ${PN}-${PV}" + fi + # end debare + + # 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 branch -a --no-color | grep -q ${KMETA} + if [ $? -ne 0 ]; then + echo "ERROR. The branch '${KMETA}' is required and was not" + echo "found. Ensure that the SRC_URI points to a valid linux-yocto" + echo "kernel repository" + exit 1 + fi + fi + + machine_branch="${@ get_machine_branch(d, "${KBRANCH}" )}" + + if [ "${KBRANCH}" != "${machine_branch}" ]; then + echo "WARNING: The SRC_URI machine branch and KBRANCH are not the same." + echo " KBRANCH will be adjusted to match, but this typically is a" + echo " misconfiguration and should be checked." + fi + + # 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 $i > /dev/null + fi + done + + # Create a working tree copy of the kernel by checking out a branch + git show-ref --quiet --verify -- "refs/heads/${machine_branch}" + if [ $? -eq 0 ]; then + # checkout and clobber any unimportant files + git checkout -f ${machine_branch} + else + echo "Not checking out ${machine_branch}, it will be created later" + git checkout -f master + fi +} +do_kernel_checkout[dirs] = "${S}" + +addtask kernel_checkout before do_patch after do_unpack + +do_kernel_configme[dirs] += "${S} ${B}" +do_kernel_configme() { + echo "[INFO] doing kernel configme" + export KMETA=${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 + echo "ERROR. Could not configure ${KMACHINE}-${LINUX_KERNEL_TYPE}" + exit 1 + 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() { + cd ${S} + export KMETA=${KMETA} + + machine_branch="${@ get_machine_branch(d, "${KBRANCH}" )}" + + set +e + # if SRCREV is AUTOREV it shows up as AUTOINC there's nothing to + # check and we can exit early + if [ "${SRCREV_machine}" = "AUTOINC" ] || [ "${SRCREV_machine}" = "INVALID" ] || + [ "${SRCREV_machine}" = "" ]; then + return + fi + + # If something other than the default branch was requested, it must + # exist in the tree, and it's a hard error if it wasn't + git show-ref --quiet --verify -- "refs/heads/${machine_branch}" + if [ $? -eq 1 ]; then + if [ -n "${KBRANCH_DEFAULT}" ] && + [ "${machine_branch}" != "${KBRANCH_DEFAULT}" ]; then + echo "ERROR: branch ${machine_branch} was set for kernel compilation, " + echo " but it does not exist in the kernel repository." + echo " Check the value of KBRANCH and ensure that it describes" + echo " a valid banch in the source kernel repository" + exit 1 + fi + fi + + if [ -z "${SRCREV_machine}" ]; then + target_branch_head="${SRCREV}" + else + target_branch_head="${SRCREV_machine}" + fi + + # $SRCREV could have also been AUTOINC, so check again + if [ "${target_branch_head}" = "AUTOINC" ]; then + return + fi + + ref=`git show ${target_branch_head} 2>&1 | head -n1 || true` + if [ "$ref" = "fatal: bad object ${target_meta_head}" ]; then + echo "ERROR ${target_branch_head} is not a valid commit ID." + echo "The kernel source tree may be out of sync" + exit 1 + fi + + containing_branches=`git branch --contains $target_branch_head | sed 's/^..//'` + if [ -z "$containing_branches" ]; then + echo "ERROR: SRCREV was set to \"$target_branch_head\", but no branches" + echo " contain this commit" + exit 1 + fi + + # force the SRCREV in each branch that contains the specified + # SRCREV (if it isn't the current HEAD of that branch) + git checkout -q master + for b in $containing_branches; do + branch_head=`git show-ref -s --heads ${b}` + if [ "$branch_head" != "$target_branch_head" ]; then + echo "[INFO] Setting branch $b to ${target_branch_head}" + if [ "$b" = "master" ]; then + git reset --hard $target_branch_head > /dev/null + else + git branch -D $b > /dev/null + git branch $b $target_branch_head > /dev/null + fi + fi + done + + ## KMETA branch validation. + ## We do validation if the meta branch exists, and AUTOREV hasn't been set + meta_head=`git show-ref -s --heads ${KMETA}` + target_meta_head="${SRCREV_meta}" + git show-ref --quiet --verify -- "refs/heads/${KMETA}" + if [ $? -eq 0 ] && [ "${target_meta_head}" != "AUTOINC" ]; then + if [ "$meta_head" != "$target_meta_head" ]; then + ref=`git show ${target_meta_head} 2>&1 | head -n1 || true` + if [ "$ref" = "fatal: bad object ${target_meta_head}" ]; then + echo "ERROR ${target_meta_head} is not a valid commit ID" + echo "The kernel source tree may be out of sync" + exit 1 + else + echo "[INFO] 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 + echo "ERROR: could not checkout ${KMETA} branch from known hash ${target_meta_head}" + exit 1 + fi + fi + fi + fi + + git show-ref --quiet --verify -- "refs/heads/${machine_branch}" + if [ $? -eq 0 ]; then + # restore the branch for builds + git checkout -q -f ${machine_branch} + else + git checkout -q master + fi +} + +# Many scripts want to look in arch/$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