diff options
Diffstat (limited to 'import-layers/yocto-poky/meta/classes/kernel-yocto.bbclass')
| -rw-r--r-- | import-layers/yocto-poky/meta/classes/kernel-yocto.bbclass | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/import-layers/yocto-poky/meta/classes/kernel-yocto.bbclass b/import-layers/yocto-poky/meta/classes/kernel-yocto.bbclass new file mode 100644 index 000000000..f86b3ef01 --- /dev/null +++ b/import-layers/yocto-poky/meta/classes/kernel-yocto.bbclass @@ -0,0 +1,376 @@ +# remove tasks that modify the source tree in case externalsrc is inherited +SRCTREECOVEREDTASKS += "do_kernel_configme do_validate_branches do_kernel_configcheck do_kernel_checkout do_shared_workdir do_fetch do_unpack 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 + type="" + 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(',') + btype = urldata.parm.get("type") + if btype != "kmeta": + return branches[0] + + return default + +do_kernel_metadata() { + set +e + 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 + + # In a similar manner to the kernel itself: + # + # defconfig: $(obj)/conf + # ifeq ($(KBUILD_DEFCONFIG),) + # $< --defconfig $(Kconfig) + # else + # @echo "*** Default configuration is based on '$(KBUILD_DEFCONFIG)'" + # $(Q)$< --defconfig=arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG) $(Kconfig) + # endif + # + # If a defconfig is specified via the KBUILD_DEFCONFIG variable, we copy it + # from the source tree, into a common location and normalized "defconfig" name, + # where the rest of the process will include and incoroporate it into the build + # + # If the fetcher has already placed a defconfig in WORKDIR (from the SRC_URI), + # we don't overwrite it, but instead warn the user that SRC_URI defconfigs take + # precendence. + # + if [ -n "${KBUILD_DEFCONFIG}" ]; then + if [ -f "${S}/arch/${ARCH}/configs/${KBUILD_DEFCONFIG}" ]; then + if [ -f "${WORKDIR}/defconfig" ]; then + # If the two defconfig's are different, warn that we didn't overwrite the + # one already placed in WORKDIR by the fetcher. + cmp "${WORKDIR}/defconfig" "${S}/arch/${ARCH}/configs/${KBUILD_DEFCONFIG}" + if [ $? -ne 0 ]; then + bbwarn "defconfig detected in WORKDIR. ${KBUILD_DEFCONFIG} skipped" + fi + else + cp -f ${S}/arch/${ARCH}/configs/${KBUILD_DEFCONFIG} ${WORKDIR}/defconfig + sccs="${WORKDIR}/defconfig" + fi + else + bbfatal "A KBUILD_DECONFIG '${KBUILD_DEFCONFIG}' was specified, but not present in the source tree" + fi + fi + + sccs="$sccs ${@" ".join(find_sccs(d))}" + patches="${@" ".join(find_patches(d))}" + feat_dirs="${@" ".join(find_kernel_feature_dirs(d))}" + + # add any explicitly referenced features onto the end of the feature + # list that is passed to the kernel build scripts. + if [ -n "${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_log "Could not update ${machine_branch}" + fi +} + +do_patch() { + cd ${S} + + # executes and modifies the source tree as required + patchme ${KMACHINE} + if [ $? -ne 0 ]; then + bberror "Could not apply patches for ${KMACHINE}." + bbfatal_log "Patch failures can be resolved in the linux source directory ${S})" + fi + + # check to see if the specified SRCREV is reachable from the final branch. + # if it wasn't something wrong has happened, and we should error. + machine_srcrev="${SRCREV_machine}" + if [ -z "${machine_srcrev}" ]; then + # fallback to SRCREV if a non machine_meta tree is being built + machine_srcrev="${SRCREV}" + # if SRCREV cannot be reached something is wrong. + if [ -z "${machine_srcrev}" ]; then + bbfatal "Neither SRCREV_machine or SRCREV was specified!" + fi + fi + + current_branch=`git rev-parse --abbrev-ref HEAD` + machine_branch="${@ get_machine_branch(d, "${KBRANCH}" )}" + if [ "${current_branch}" != "${machine_branch}" ]; then + bbwarn "After meta data application, the kernel tree branch is ${current_branch}. The" + bbwarn "SRC_URI specified branch ${machine_branch}. The branch will be forced to ${machine_branch}," + bbwarn "but this means the board meta data (.scc files) do not match the SRC_URI specification." + bbwarn "The meta data and branch ${machine_branch} should be inspected to ensure the proper" + bbwarn "kernel is being built." + git checkout -f ${machine_branch} + fi + + if [ "${machine_srcrev}" != "AUTOINC" ]; then + if ! [ "$(git rev-parse --verify ${machine_srcrev}~0)" = "$(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 + + source_dir=`echo ${S} | sed 's%/$%%'` + source_workdir="${WORKDIR}/git" + if [ -d "${WORKDIR}/git/" ]; then + # case: git repository + # if S is WORKDIR/git, then we shouldn't be moving or deleting the tree. + if [ "${source_dir}" != "${source_workdir}" ]; then + if [ -d "${source_workdir}/.git" ]; then + # regular git repository with .git + rm -rf ${S} + mv ${WORKDIR}/git ${S} + else + # create source for bare cloned git repository + git clone ${WORKDIR}/git ${S} + rm -rf ${WORKDIR}/git + fi + fi + cd ${S} + else + # case: 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 + rm -f .gitignore + git init + git add . + git commit -q -m "baseline commit: creating repo for ${PN}-${PV}" + git clean -d -f + 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 $i > /dev/null + fi + done + + # Create a working tree copy of the kernel by checking out a branch + machine_branch="${@ get_machine_branch(d, "${KBRANCH}" )}" + + # checkout and clobber any unimportant files + git checkout -f ${machine_branch} +} +do_kernel_checkout[dirs] = "${S}" + +addtask kernel_checkout before do_kernel_metadata after do_unpack +addtask kernel_metadata after do_validate_branches do_unpack before do_patch +do_kernel_metadata[depends] = "kern-tools-native:do_populate_sysroot" + +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_log "Could not configure ${KMACHINE}-${LINUX_KERNEL_TYPE}" + fi + + echo "# Global settings from linux recipe" >> ${B}/.config + echo "CONFIG_LOCALVERSION="\"${LINUX_VERSION_EXTENSION}\" >> ${B}/.config +} + +addtask kernel_configme before do_configure after do_patch + +python do_kernel_configcheck() { + import re, string, sys + + # if KMETA isn't set globally by a recipe using this routine, we need to + # set the default to 'meta'. Otherwise, kconf_check is not passed a valid + # meta-series for processing + kmeta = d.getVar( "KMETA", True ) or "meta" + if not os.path.exists(kmeta): + kmeta = "." + kmeta + + pathprefix = "export PATH=%s:%s; " % (d.getVar('PATH', True), "${S}/scripts/util/") + cmd = d.expand("cd ${S}; kconf_check -config %s/meta-series ${S} ${B}" % kmeta) + ret, result = oe.utils.getstatusoutput("%s%s" % (pathprefix, cmd)) + + config_check_visibility = int(d.getVar( "KCONF_AUDIT_LEVEL", True ) or 0) + bsp_check_visibility = int(d.getVar( "KCONF_BSP_AUDIT_LEVEL", True ) or 0) + + # if config check visibility is non-zero, report dropped configuration values + mismatch_file = "${S}/" + kmeta + "/" + "mismatch.cfg" + if os.path.exists(mismatch_file): + if config_check_visibility: + with open (mismatch_file, "r") as myfile: + results = myfile.read() + bb.warn( "[kernel config]: specified values did not make it into the kernel's final configuration:\n\n%s" % results) + + # if config check visibility is level 2 or higher, report non-hardware options + nonhw_file = "${S}/" + kmeta + "/" + "nonhw_report.cfg" + if os.path.exists(nonhw_file): + if config_check_visibility > 1: + with open (nonhw_file, "r") as myfile: + results = myfile.read() + bb.warn( "[kernel config]: BSP specified non-hw configuration:\n\n%s" % results) + + bsp_desc = "${S}/" + kmeta + "/" + "top_tgt" + if os.path.exists(bsp_desc) and bsp_check_visibility > 1: + with open (bsp_desc, "r") as myfile: + bsp_tgt = myfile.read() + m = re.match("^(.*)scratch.obj(.*)$", bsp_tgt) + if not m is None: + bb.warn( "[kernel]: An auto generated BSP description was used, this normally indicates a misconfiguration.\n" + + "Check that your machine (%s) has an associated kernel description." % "${MACHINE}" ) +} + +# 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 ${S} + + machine_branch="${@ 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}" = "" ]; then + if [ "${SRCREV}" != "AUTOINC" ] && [ "${SRCREV}" != "INVALID" ]; then + # SRCREV_machine_<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}" + fi + else + git cat-file -t ${machine_srcrev} > /dev/null + if [ $? -ne 0 ]; then + bberror "${machine_srcrev} is not a valid commit ID." + bbfatal_log "The kernel source tree may be out of sync" + fi + force_srcrev=${machine_srcrev} + 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 ${force_srcrev} + fi + fi +} + +OE_TERMINAL_EXPORTS += "KBUILD_OUTPUT" +KBUILD_OUTPUT = "${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) +} |
