414 lines
13 KiB
Plaintext
414 lines
13 KiB
Plaintext
S = "${WORKDIR}/linux"
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# remove tasks that modify the source tree in case externalsrc is inherited
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SRCTREECOVEREDTASKS += "do_kernel_link_vmlinux do_kernel_configme do_validate_branches do_kernel_configcheck do_kernel_checkout do_patch"
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# returns local (absolute) path names for all valid patches in the
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# src_uri
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def find_patches(d):
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patches = src_patches(d)
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patch_list=[]
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for p in patches:
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_, _, local, _, _, _ = bb.fetch.decodeurl(p)
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patch_list.append(local)
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return patch_list
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# returns all the elements from the src uri that are .scc files
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def find_sccs(d):
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sources=src_patches(d, True)
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sources_list=[]
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for s in sources:
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base, ext = os.path.splitext(os.path.basename(s))
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if ext and ext in [".scc", ".cfg"]:
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sources_list.append(s)
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elif base and base in 'defconfig':
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sources_list.append(s)
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return sources_list
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# check the SRC_URI for "kmeta" type'd git repositories. Return the name of
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# the repository as it will be found in WORKDIR
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def find_kernel_feature_dirs(d):
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feature_dirs=[]
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fetch = bb.fetch2.Fetch([], d)
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for url in fetch.urls:
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urldata = fetch.ud[url]
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parm = urldata.parm
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if "type" in parm:
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type = parm["type"]
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if "destsuffix" in parm:
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destdir = parm["destsuffix"]
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if type == "kmeta":
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feature_dirs.append(destdir)
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return feature_dirs
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# find the master/machine source branch. In the same way that the fetcher proceses
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# git repositories in the SRC_URI we take the first repo found, first branch.
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def get_machine_branch(d, default):
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fetch = bb.fetch2.Fetch([], d)
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for url in fetch.urls:
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urldata = fetch.ud[url]
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parm = urldata.parm
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if "branch" in parm:
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branches = urldata.parm.get("branch").split(',')
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return branches[0]
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return default
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do_patch() {
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cd ${S}
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export KMETA=${KMETA}
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# if kernel tools are available in-tree, they are preferred
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# and are placed on the path before any external tools. Unless
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# the external tools flag is set, in that case we do nothing.
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if [ -f "${S}/scripts/util/configme" ]; then
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if [ -z "${EXTERNAL_KERNEL_TOOLS}" ]; then
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PATH=${S}/scripts/util:${PATH}
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fi
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fi
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machine_branch="${@ get_machine_branch(d, "${KBRANCH}" )}"
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# if we have a defined/set meta branch we should not be generating
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# any meta data. The passed branch has what we need.
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if [ -n "${KMETA}" ]; then
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createme_flags="--disable-meta-gen --meta ${KMETA}"
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fi
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createme ${createme_flags} ${ARCH} ${machine_branch}
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if [ $? -ne 0 ]; then
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echo "ERROR. Could not create ${machine_branch}"
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exit 1
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fi
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sccs="${@" ".join(find_sccs(d))}"
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patches="${@" ".join(find_patches(d))}"
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feat_dirs="${@" ".join(find_kernel_feature_dirs(d))}"
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set +e
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# add any explicitly referenced features onto the end of the feature
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# list that is passed to the kernel build scripts.
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if [ -n "${KERNEL_FEATURES}" ]; then
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for feat in ${KERNEL_FEATURES}; do
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addon_features="$addon_features --feature $feat"
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done
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fi
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# check for feature directories/repos/branches that were part of the
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# SRC_URI. If they were supplied, we convert them into include directives
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# for the update part of the process
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if [ -n "${feat_dirs}" ]; then
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for f in ${feat_dirs}; do
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if [ -d "${WORKDIR}/$f/meta" ]; then
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includes="$includes -I${WORKDIR}/$f/meta"
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elif [ -d "${WORKDIR}/$f" ]; then
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includes="$includes -I${WORKDIR}/$f"
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fi
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done
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fi
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if [ "${machine_branch}" != "${KBRANCH_DEFAULT}" ]; then
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updateme_flags="--branch ${machine_branch}"
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fi
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# updates or generates the target description
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updateme ${updateme_flags} -DKDESC=${KMACHINE}:${LINUX_KERNEL_TYPE} \
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${includes} ${addon_features} ${ARCH} ${KMACHINE} ${sccs} ${patches}
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if [ $? -ne 0 ]; then
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echo "ERROR. Could not update ${machine_branch}"
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exit 1
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fi
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# executes and modifies the source tree as required
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patchme ${KMACHINE}
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if [ $? -ne 0 ]; then
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echo "ERROR. Could not apply patches for ${KMACHINE}."
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echo " Patch failures can be resolved in the devshell (bitbake -c devshell ${PN})"
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exit 1
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fi
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# Perform a final check. If something other than the default kernel
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# branch was requested, and that's not where we ended up, then we
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# should thrown an error, since we aren't building what was expected
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final_branch="$(git symbolic-ref HEAD 2>/dev/null)"
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final_branch=${final_branch##refs/heads/}
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if [ "${machine_branch}" != "${KBRANCH_DEFAULT}" ] &&
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[ "${final_branch}" != "${machine_branch}" ]; then
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echo "ERROR: branch ${machine_branch} was requested, but was not properly"
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echo " configured to be built. The current branch is ${final_branch}"
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exit 1
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fi
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}
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do_kernel_checkout() {
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set +e
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# A linux yocto SRC_URI should use the bareclone option. That
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# ensures that all the branches are available in the WORKDIR version
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# of the repository.
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source_dir=`echo ${S} | sed 's%/$%%'`
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source_workdir="${WORKDIR}/git"
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if [ -d "${WORKDIR}/git/" ] && [ -d "${WORKDIR}/git/.git" ]; then
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# case2: the repository is a non-bare clone
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# if S is WORKDIR/git, then we shouldn't be moving or deleting the tree.
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if [ "${source_dir}" != "${source_workdir}" ]; then
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rm -rf ${S}
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mv ${WORKDIR}/git ${S}
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fi
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cd ${S}
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elif [ -d "${WORKDIR}/git/" ] && [ ! -d "${WORKDIR}/git/.git" ]; then
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# case2: the repository is a bare clone
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# if S is WORKDIR/git, then we shouldn't be moving or deleting the tree.
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if [ "${source_dir}" != "${source_workdir}" ]; then
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rm -rf ${S}
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mkdir -p ${S}/.git
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mv ${WORKDIR}/git/* ${S}/.git
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rm -rf ${WORKDIR}/git/
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fi
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cd ${S}
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git config core.bare false
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else
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# case 3: we have no git repository at all.
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# To support low bandwidth options for building the kernel, we'll just
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# convert the tree to a git repo and let the rest of the process work unchanged
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# if ${S} hasn't been set to the proper subdirectory a default of "linux" is
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# used, but we can't initialize that empty directory. So check it and throw a
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# clear error
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cd ${S}
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if [ ! -f "Makefile" ]; then
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echo "[ERROR]: S is not set to the linux source directory. Check "
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echo " the recipe and set S to the proper extracted subdirectory"
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exit 1
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fi
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git init
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git add .
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git commit -q -m "baseline commit: creating repo for ${PN}-${PV}"
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fi
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# end debare
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# If KMETA is defined, the branch must exist, but a machine branch
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# can be missing since it may be created later by the tools.
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if [ -n "${KMETA}" ]; then
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git branch -a | grep -q ${KMETA}
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if [ $? -ne 0 ]; then
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echo "ERROR. The branch '${KMETA}' is required and was not"
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echo "found. Ensure that the SRC_URI points to a valid linux-yocto"
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echo "kernel repository"
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exit 1
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fi
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fi
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machine_branch="${@ get_machine_branch(d, "${KBRANCH}" )}"
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if [ "${KBRANCH}" != "${machine_branch}" ]; then
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echo "WARNING: The SRC_URI machine branch and KBRANCH are not the same."
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echo " KBRANCH will be adjusted to match, but this typically is a"
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echo " misconfiguration and should be checked."
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fi
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# convert any remote branches to local tracking ones
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for i in `git branch -a | grep remotes | grep -v HEAD`; do
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b=`echo $i | cut -d' ' -f2 | sed 's%remotes/origin/%%'`;
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git show-ref --quiet --verify -- "refs/heads/$b"
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if [ $? -ne 0 ]; then
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git branch $b $i > /dev/null
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fi
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done
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# Create a working tree copy of the kernel by checking out a branch
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git show-ref --quiet --verify -- "refs/heads/${machine_branch}"
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if [ $? -eq 0 ]; then
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# checkout and clobber any unimportant files
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git checkout -f ${machine_branch}
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else
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echo "Not checking out ${machine_branch}, it will be created later"
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git checkout -f master
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fi
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}
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do_kernel_checkout[dirs] = "${S}"
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addtask kernel_checkout before do_patch after do_unpack
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do_kernel_configme[dirs] = "${S} ${B}"
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do_kernel_configme() {
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echo "[INFO] doing kernel configme"
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export KMETA=${KMETA}
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if [ -n ${KCONFIG_MODE} ]; then
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configmeflags=${KCONFIG_MODE}
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else
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# If a defconfig was passed, use =n as the baseline, which is achieved
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# via --allnoconfig
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if [ -f ${WORKDIR}/defconfig ]; then
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configmeflags="--allnoconfig"
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fi
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fi
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cd ${S}
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PATH=${PATH}:${S}/scripts/util
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configme ${configmeflags} --reconfig --output ${B} ${LINUX_KERNEL_TYPE} ${KMACHINE}
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if [ $? -ne 0 ]; then
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echo "ERROR. Could not configure ${KMACHINE}-${LINUX_KERNEL_TYPE}"
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exit 1
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fi
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echo "# Global settings from linux recipe" >> ${B}/.config
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echo "CONFIG_LOCALVERSION="\"${LINUX_VERSION_EXTENSION}\" >> ${B}/.config
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}
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python do_kernel_configcheck() {
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import re, string, sys
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bb.plain("NOTE: validating kernel config, see log.do_kernel_configcheck for details")
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# if KMETA isn't set globally by a recipe using this routine, we need to
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# set the default to 'meta'. Otherwise, kconf_check is not passed a valid
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# meta-series for processing
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kmeta = d.getVar( "KMETA", True ) or "meta"
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if not os.path.exists(kmeta):
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kmeta = "." + kmeta
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pathprefix = "export PATH=%s:%s; " % (d.getVar('PATH', True), "${S}/scripts/util/")
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cmd = d.expand("cd ${S}; kconf_check -config- %s/meta-series ${S} ${B}" % kmeta)
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ret, result = oe.utils.getstatusoutput("%s%s" % (pathprefix, cmd))
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config_check_visibility = d.getVar( "KCONF_AUDIT_LEVEL", True ) or 1
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if config_check_visibility == 1:
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bb.debug( 1, "%s" % result )
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else:
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bb.note( "%s" % result )
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}
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# Ensure that the branches (BSP and meta) are on the locations specified by
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# their SRCREV values. If they are NOT on the right commits, the branches
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# are corrected to the proper commit.
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do_validate_branches() {
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cd ${S}
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export KMETA=${KMETA}
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machine_branch="${@ get_machine_branch(d, "${KBRANCH}" )}"
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set +e
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# if SRCREV is AUTOREV it shows up as AUTOINC there's nothing to
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# check and we can exit early
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if [ "${SRCREV_machine}" = "AUTOINC" ] || "${SRCREV_machine}" = "INVALID" ] ||
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[ "${SRCREV_machine}" = "" ]; then
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return
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fi
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# If something other than the default branch was requested, it must
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# exist in the tree, and it's a hard error if it wasn't
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git show-ref --quiet --verify -- "refs/heads/${machine_branch}"
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if [ $? -eq 1 ]; then
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if [ -n "${KBRANCH_DEFAULT}" ] &&
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[ "${machine_branch}" != "${KBRANCH_DEFAULT}" ]; then
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echo "ERROR: branch ${machine_branch} was set for kernel compilation, "
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echo " but it does not exist in the kernel repository."
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echo " Check the value of KBRANCH and ensure that it describes"
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echo " a valid banch in the source kernel repository"
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exit 1
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fi
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fi
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if [ -z "${SRCREV_machine}" ]; then
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target_branch_head="${SRCREV}"
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else
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target_branch_head="${SRCREV_machine}"
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fi
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# $SRCREV could have also been AUTOINC, so check again
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if [ "${target_branch_head}" = "AUTOINC" ]; then
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return
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fi
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ref=`git show ${target_branch_head} 2>&1 | head -n1 || true`
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if [ "$ref" = "fatal: bad object ${target_meta_head}" ]; then
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echo "ERROR ${target_branch_head} is not a valid commit ID."
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echo "The kernel source tree may be out of sync"
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exit 1
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fi
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containing_branches=`git branch --contains $target_branch_head | sed 's/^..//'`
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if [ -z "$containing_branches" ]; then
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echo "ERROR: SRCREV was set to \"$target_branch_head\", but no branches"
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echo " contain this commit"
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exit 1
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fi
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# force the SRCREV in each branch that contains the specified
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# SRCREV (if it isn't the current HEAD of that branch)
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git checkout -q master
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for b in $containing_branches; do
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branch_head=`git show-ref -s --heads ${b}`
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if [ "$branch_head" != "$target_branch_head" ]; then
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echo "[INFO] Setting branch $b to ${target_branch_head}"
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if [ "$b" = "master" ]; then
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git reset --hard $target_branch_head > /dev/null
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else
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git branch -D $b > /dev/null
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git branch $b $target_branch_head > /dev/null
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fi
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fi
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done
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## KMETA branch validation
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meta_head=`git show-ref -s --heads ${KMETA}`
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target_meta_head="${SRCREV_meta}"
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git show-ref --quiet --verify -- "refs/heads/${KMETA}"
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if [ $? -eq 1 ]; then
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return
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fi
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if [ "${target_meta_head}" = "AUTOINC" ]; then
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return
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fi
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if [ "$meta_head" != "$target_meta_head" ]; then
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ref=`git show ${target_meta_head} 2>&1 | head -n1 || true`
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if [ "$ref" = "fatal: bad object ${target_meta_head}" ]; then
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echo "ERROR ${target_meta_head} is not a valid commit ID"
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echo "The kernel source tree may be out of sync"
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exit 1
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else
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echo "[INFO] Setting branch ${KMETA} to ${target_meta_head}"
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git branch -m ${KMETA} ${KMETA}-orig
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git checkout -q -b ${KMETA} ${target_meta_head}
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if [ $? -ne 0 ];then
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echo "ERROR: could not checkout ${KMETA} branch from known hash ${target_meta_head}"
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exit 1
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fi
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fi
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fi
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git show-ref --quiet --verify -- "refs/heads/${machine_branch}"
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if [ $? -eq 0 ]; then
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# restore the branch for builds
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git checkout -q -f ${machine_branch}
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else
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git checkout -q master
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fi
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}
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# Many scripts want to look in arch/$arch/boot for the bootable
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# image. This poses a problem for vmlinux based booting. This
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# task arranges to have vmlinux appear in the normalized directory
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# location.
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do_kernel_link_vmlinux() {
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if [ ! -d "${B}/arch/${ARCH}/boot" ]; then
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mkdir ${B}/arch/${ARCH}/boot
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fi
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cd ${B}/arch/${ARCH}/boot
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ln -sf ../../../vmlinux
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}
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OE_TERMINAL_EXPORTS += "GUILT_BASE KBUILD_OUTPUT"
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GUILT_BASE = "meta"
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KBUILD_OUTPUT = "${B}"
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