Squashed 'yocto-poky/' content from commit ea562de
git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/meta/classes/kernel-yocto.bbclass b/meta/classes/kernel-yocto.bbclass
new file mode 100644
index 0000000..325f94c
--- /dev/null
+++ b/meta/classes/kernel-yocto.bbclass
@@ -0,0 +1,368 @@
+# 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_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(',')
+ 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 "${machine_srcrev}" ]; then
+ bbfatal "Neither SRCREV_machine or SRCREV was specified!"
+ fi
+ fi
+
+ if [ "${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 (bare or non-bare)
+ # 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}
+ 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 ${force_srcrev}
+ fi
+ fi
+}
+
+# Many scripts want to look in arch/$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 += "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)
+}