diff --git a/poky/meta/classes/archiver.bbclass b/poky/meta/classes/archiver.bbclass
index e221fff..aff1f9d 100644
--- a/poky/meta/classes/archiver.bbclass
+++ b/poky/meta/classes/archiver.bbclass
@@ -582,8 +582,8 @@
 addtask do_deploy_archives_setscene
 
 addtask do_ar_original after do_unpack
-addtask do_unpack_and_patch after do_patch
-addtask do_ar_patched after do_unpack_and_patch before do_preconfigure do_configure
+addtask do_unpack_and_patch after do_patch do_preconfigure
+addtask do_ar_patched after do_unpack_and_patch
 addtask do_ar_configured after do_unpack_and_patch
 addtask do_ar_mirror after do_fetch
 addtask do_dumpdata
diff --git a/poky/meta/classes/baremetal-image.bbclass b/poky/meta/classes/baremetal-image.bbclass
new file mode 100644
index 0000000..90d58f2
--- /dev/null
+++ b/poky/meta/classes/baremetal-image.bbclass
@@ -0,0 +1,99 @@
+# Baremetal image class
+#
+# This class is meant to be inherited by recipes for baremetal/RTOS applications
+# It contains code that would be used by all of them, every recipe just needs to
+# override certain variables.
+#
+# For scalability purposes, code within this class focuses on the "image" wiring
+# to satisfy the OpenEmbedded image creation and testing infrastructure.
+#
+# See meta-skeleton for a working example.
+
+
+# Toolchain should be baremetal or newlib based.
+# TCLIBC="baremetal" or TCLIBC="newlib"
+COMPATIBLE_HOST_libc-musl_class-target = "null"
+COMPATIBLE_HOST_libc-glibc_class-target = "null"
+
+
+inherit rootfs-postcommands
+
+# Set some defaults, but these should be overriden by each recipe if required
+IMGDEPLOYDIR ?= "${WORKDIR}/deploy-${PN}-image-complete"
+BAREMETAL_BINNAME ?= "hello_baremetal_${MACHINE}"
+IMAGE_LINK_NAME ?= "baremetal-helloworld-image-${MACHINE}"
+IMAGE_NAME_SUFFIX ?= ""
+
+do_rootfs[dirs] = "${IMGDEPLOYDIR} ${DEPLOY_DIR_IMAGE}"
+
+do_image(){
+    install ${D}/${base_libdir}/firmware/${BAREMETAL_BINNAME}.bin ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.bin
+    install ${D}/${base_libdir}/firmware/${BAREMETAL_BINNAME}.elf ${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.elf
+}
+
+do_image_complete(){
+    :
+}
+
+python do_rootfs(){
+    from oe.utils import execute_pre_post_process
+    from pathlib import Path
+
+    # Write empty manifest file to satisfy test infrastructure
+    deploy_dir = d.getVar('IMGDEPLOYDIR')
+    link_name = d.getVar('IMAGE_LINK_NAME')
+    manifest_name = d.getVar('IMAGE_MANIFEST')
+
+    Path(manifest_name).touch()
+    if os.path.exists(manifest_name) and link_name:
+        manifest_link = deploy_dir + "/" + link_name + ".manifest"
+        if os.path.lexists(manifest_link):
+            os.remove(manifest_link)
+        os.symlink(os.path.basename(manifest_name), manifest_link)
+    execute_pre_post_process(d, d.getVar('ROOTFS_POSTPROCESS_COMMAND'))
+}
+
+
+# Assure binaries, manifest and qemubootconf are populated on DEPLOY_DIR_IMAGE
+do_image_complete[dirs] = "${TOPDIR}"
+do_image_complete[umask] = "022"
+SSTATETASKS += "do_image_complete"
+SSTATE_SKIP_CREATION_task-image-complete = '1'
+do_image_complete[sstate-inputdirs] = "${IMGDEPLOYDIR}"
+do_image_complete[sstate-outputdirs] = "${DEPLOY_DIR_IMAGE}"
+do_image_complete[stamp-extra-info] = "${MACHINE_ARCH}"
+addtask do_image_complete after do_image before do_build
+
+python do_image_complete_setscene () {
+    sstate_setscene(d)
+}
+addtask do_image_complete_setscene
+
+# QEMU generic Baremetal/RTOS parameters
+QB_DEFAULT_KERNEL ?= "${IMAGE_LINK_NAME}.bin"
+QB_MEM ?= "-m 256"
+QB_DEFAULT_FSTYPE ?= "bin"
+QB_DTB ?= ""
+QB_OPT_APPEND = "-nographic"
+
+# This next part is necessary to trick the build system into thinking
+# its building an image recipe so it generates the qemuboot.conf
+addtask do_rootfs before do_image after do_install
+addtask do_image after do_rootfs before do_image_complete
+addtask do_image_complete after do_image before do_build
+inherit qemuboot
+
+# Based on image.bbclass to make sure we build qemu
+python(){
+    # do_addto_recipe_sysroot doesnt exist for all recipes, but we need it to have
+    # /usr/bin on recipe-sysroot (qemu) populated
+    def extraimage_getdepends(task):
+        deps = ""
+        for dep in (d.getVar('EXTRA_IMAGEDEPENDS') or "").split():
+        # Make sure we only add it for qemu
+            if 'qemu' in dep:
+                deps += " %s:%s" % (dep, task)
+        return deps
+    d.appendVarFlag('do_image', 'depends', extraimage_getdepends('do_addto_recipe_sysroot'))
+    d.appendVarFlag('do_image', 'depends', extraimage_getdepends('do_populate_sysroot'))
+}
diff --git a/poky/meta/classes/deploy.bbclass b/poky/meta/classes/deploy.bbclass
index 6d52908..737c261 100644
--- a/poky/meta/classes/deploy.bbclass
+++ b/poky/meta/classes/deploy.bbclass
@@ -8,4 +8,5 @@
 }
 addtask do_deploy_setscene
 do_deploy[dirs] = "${DEPLOYDIR} ${B}"
+do_deploy[cleandirs] = "${DEPLOYDIR}"
 do_deploy[stamp-extra-info] = "${MACHINE_ARCH}"
diff --git a/poky/meta/classes/gtk-icon-cache.bbclass b/poky/meta/classes/gtk-icon-cache.bbclass
index 91cb4ad..dd394af2 100644
--- a/poky/meta/classes/gtk-icon-cache.bbclass
+++ b/poky/meta/classes/gtk-icon-cache.bbclass
@@ -1,6 +1,10 @@
 FILES_${PN} += "${datadir}/icons/hicolor"
 
-DEPENDS +=" ${@['hicolor-icon-theme', '']['${BPN}' == 'hicolor-icon-theme']} gtk+3-native"
+DEPENDS +=" ${@['hicolor-icon-theme', '']['${BPN}' == 'hicolor-icon-theme']} \
+            ${@['gdk-pixbuf', '']['${BPN}' == 'gdk-pixbuf']} \
+            ${@['gtk+3', '']['${BPN}' == 'gtk+3']} \
+            gtk+3-native \
+"
 
 PACKAGE_WRITE_DEPS += "gtk+3-native gdk-pixbuf-native"
 
@@ -48,9 +52,18 @@
         bb.note("adding hicolor-icon-theme dependency to %s" % pkg)
         rdepends = ' ' + d.getVar('MLPREFIX', False) + "hicolor-icon-theme"
         d.appendVar('RDEPENDS_%s' % pkg, rdepends)
-    
+
+        #gtk_icon_cache_postinst depend on gdk-pixbuf and gtk+3
+        bb.note("adding gdk-pixbuf dependency to %s" % pkg)
+        rdepends = ' ' + d.getVar('MLPREFIX', False) + "gdk-pixbuf"
+        d.appendVar('RDEPENDS_%s' % pkg, rdepends)
+
+        bb.note("adding gtk+3 dependency to %s" % pkg)
+        rdepends = ' ' + d.getVar('MLPREFIX', False) + "gtk+3"
+        d.appendVar('RDEPENDS_%s' % pkg, rdepends)
+
         bb.note("adding gtk-icon-cache postinst and postrm scripts to %s" % pkg)
-        
+
         postinst = d.getVar('pkg_postinst_%s' % pkg)
         if not postinst:
             postinst = '#!/bin/sh\n'
diff --git a/poky/meta/classes/kernel-yocto.bbclass b/poky/meta/classes/kernel-yocto.bbclass
index 5bc6270..54a1a16 100644
--- a/poky/meta/classes/kernel-yocto.bbclass
+++ b/poky/meta/classes/kernel-yocto.bbclass
@@ -131,7 +131,7 @@
 			else
 				cp -f ${S}/arch/${ARCH}/configs/${KBUILD_DEFCONFIG} ${WORKDIR}/defconfig
 			fi
-			sccs="${WORKDIR}/defconfig"
+			in_tree_defconfig="${WORKDIR}/defconfig"
 		else
 			bbfatal "A KBUILD_DEFCONFIG '${KBUILD_DEFCONFIG}' was specified, but not present in the source tree"
 		fi
@@ -153,14 +153,25 @@
 	patches="${@" ".join(find_patches(d,''))}"
 	feat_dirs="${@" ".join(find_kernel_feature_dirs(d))}"
 
-	# a quick check to make sure we don't have duplicate defconfigs
-	# If there's a defconfig in the SRC_URI, did we also have one from
-	# the KBUILD_DEFCONFIG processing above ?
-	if [ -n "$sccs" ]; then
-	    # we did have a defconfig from above. remove any that might be in the src_uri
-	    sccs_from_src_uri=$(echo $sccs_from_src_uri | awk '{ if ($0!="defconfig") { print $0 } }' RS=' ')
+	# a quick check to make sure we don't have duplicate defconfigs If
+	# there's a defconfig in the SRC_URI, did we also have one from the
+	# KBUILD_DEFCONFIG processing above ?
+	src_uri_defconfig=$(echo $sccs_from_src_uri | awk '(match($0, "defconfig") != 0) { print $0 }' RS=' ')
+	# drop and defconfig's from the src_uri variable, we captured it just above here if it existed
+	sccs_from_src_uri=$(echo $sccs_from_src_uri | awk '(match($0, "defconfig") == 0) { print $0 }' RS=' ')
+
+	if [ -n "$in_tree_defconfig" ]; then
+		sccs_defconfig=$in_tree_defconfig
+		if [ -n "$src_uri_defconfig" ]; then
+			bbwarn "[NOTE]: defconfig was supplied both via KBUILD_DEFCONFIG and SRC_URI. Dropping SRC_URI defconfig"
+		fi
+	else
+		# if we didn't have an in-tree one, make our defconfig the one
+		# from the src_uri. Note: there may not have been one from the
+		# src_uri, so this can be an empty variable.
+		sccs_defconfig=$src_uri_defconfig
 	fi
-	sccs="$sccs $sccs_from_src_uri"
+	sccs="$sccs_from_src_uri"
 
 	# check for feature directories/repos/branches that were part of the
 	# SRC_URI. If they were supplied, we convert them into include directives
@@ -187,11 +198,10 @@
 	# expand kernel features into their full path equivalents
 	bsp_definition=$(spp ${includes} --find -DKMACHINE=${KMACHINE} -DKTYPE=${LINUX_KERNEL_TYPE})
 	if [ -z "$bsp_definition" ]; then
-		echo "$sccs" | grep -q defconfig
-		if [ $? -ne 0 ]; then
+		if [ -z "$sccs_defconfig" ]; then
 			bbfatal_log "Could not locate BSP definition for ${KMACHINE}/${LINUX_KERNEL_TYPE} and no defconfig was provided"
 		fi
-
+	else
 		# if the bsp definition has "define KMETA_EXTERNAL_BSP t",
 		# then we need to set a flag that will instruct the next
 		# steps to use the BSP as both configuration and patches.
@@ -206,7 +216,7 @@
 	elements="`echo -n ${bsp_definition} ${sccs} ${patches} ${KERNEL_FEATURES}`"
 	if [ -n "${elements}" ]; then
 		echo "${bsp_definition}" > ${S}/${meta_dir}/bsp_definition
-		scc --force -o ${S}/${meta_dir}:cfg,merge,meta ${includes} ${bsp_definition} ${sccs} ${patches} ${KERNEL_FEATURES}
+		scc --force -o ${S}/${meta_dir}:cfg,merge,meta ${includes} $sccs_defconfig $bsp_definition $sccs $patches ${KERNEL_FEATURES}
 		if [ $? -ne 0 ]; then
 			bbfatal_log "Could not generate configuration queue for ${KMACHINE}."
 		fi
diff --git a/poky/meta/classes/kernel.bbclass b/poky/meta/classes/kernel.bbclass
index 20a0135..cf43a5d 100644
--- a/poky/meta/classes/kernel.bbclass
+++ b/poky/meta/classes/kernel.bbclass
@@ -4,10 +4,12 @@
 KERNEL_DEPLOYSUBDIR ??= "${@ "" if (d.getVar("KERNEL_PACKAGE_NAME") == "kernel") else d.getVar("KERNEL_PACKAGE_NAME") }"
 
 PROVIDES += "${@ "virtual/kernel" if (d.getVar("KERNEL_PACKAGE_NAME") == "kernel") else "" }"
-DEPENDS += "virtual/${TARGET_PREFIX}binutils virtual/${TARGET_PREFIX}gcc kmod-native bc-native lzop-native bison-native"
+DEPENDS += "virtual/${TARGET_PREFIX}binutils virtual/${TARGET_PREFIX}gcc kmod-native bc-native bison-native"
+DEPENDS += "${@bb.utils.contains("INITRAMFS_FSTYPES", "cpio.lzo", "lzop-native", "", d)}"
+DEPENDS += "${@bb.utils.contains("INITRAMFS_FSTYPES", "cpio.lz4", "lz4-native", "", d)}"
 PACKAGE_WRITE_DEPS += "depmodwrapper-cross"
 
-do_deploy[depends] += "depmodwrapper-cross:do_populate_sysroot"
+do_deploy[depends] += "depmodwrapper-cross:do_populate_sysroot gzip-native:do_populate_sysroot"
 do_clean[depends] += "make-mod-scripts:do_clean"
 
 CVE_PRODUCT ?= "linux_kernel"
@@ -94,6 +96,25 @@
         d.appendVar('RDEPENDS_%s-image' % kname, ' %s-image-%s' % (kname, typelower))
         d.setVar('PKG_%s-image-%s' % (kname,typelower), '%s-image-%s-${KERNEL_VERSION_PKG_NAME}' % (kname, typelower))
         d.setVar('ALLOW_EMPTY_%s-image-%s' % (kname, typelower), '1')
+        d.setVar('pkg_postinst_%s-image-%s' % (kname,typelower), """set +e
+if [ -n "$D" ]; then
+    ln -sf %s-${KERNEL_VERSION} $D/${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1
+else
+    ln -sf %s-${KERNEL_VERSION} ${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1
+    if [ $? -ne 0 ]; then
+        echo "Filesystem on ${KERNEL_IMAGEDEST}/ doesn't support symlinks, falling back to copied image (%s)."
+        install -m 0644 ${KERNEL_IMAGEDEST}/%s-${KERNEL_VERSION} ${KERNEL_IMAGEDEST}/%s
+    fi
+fi
+set -e
+""" % (type, type, type, type, type, type, type))
+        d.setVar('pkg_postrm_%s-image-%s' % (kname,typelower), """set +e
+if [ -f "${KERNEL_IMAGEDEST}/%s" -o -L "${KERNEL_IMAGEDEST}/%s" ]; then
+    rm -f ${KERNEL_IMAGEDEST}/%s  > /dev/null 2>&1
+fi
+set -e
+""" % (type, type, type))
+
 
     image = d.getVar('INITRAMFS_IMAGE')
     # If the INTIRAMFS_IMAGE is set but the INITRAMFS_IMAGE_BUNDLE is set to 0,
@@ -210,7 +231,7 @@
 				;;
 			*lz4)
 				echo "lz4 decompressing image"
-				lz4 -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img
+				lz4 -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img ${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio
 				break
 				;;
 			*lzo)
@@ -385,9 +406,6 @@
 	install -d ${D}/boot
 	for imageType in ${KERNEL_IMAGETYPES} ; do
 		install -m 0644 ${KERNEL_OUTPUT_DIR}/${imageType} ${D}/${KERNEL_IMAGEDEST}/${imageType}-${KERNEL_VERSION}
-		if [ "${KERNEL_PACKAGE_NAME}" = "kernel" ]; then
-			ln -sf ${imageType}-${KERNEL_VERSION} ${D}/${KERNEL_IMAGEDEST}/${imageType}
-		fi
 	done
 	install -m 0644 System.map ${D}/boot/System.map-${KERNEL_VERSION}
 	install -m 0644 .config ${D}/boot/config-${KERNEL_VERSION}
@@ -463,7 +481,7 @@
 
 	# Copy files required for module builds
 	cp System.map $kerneldir/System.map-${KERNEL_VERSION}
-	cp Module.symvers $kerneldir/
+	[ -e Module.symvers ] && cp Module.symvers $kerneldir/
 	cp .config $kerneldir/
 	mkdir -p $kerneldir/include/config
 	cp include/config/kernel.release $kerneldir/include/config/kernel.release
@@ -729,8 +747,6 @@
 		done
 	fi
 }
-do_deploy[cleandirs] = "${DEPLOYDIR}"
-do_deploy[dirs] = "${DEPLOYDIR} ${B}"
 do_deploy[prefuncs] += "package_get_auto_pr"
 
 addtask deploy after do_populate_sysroot do_packagedata
diff --git a/poky/meta/classes/populate_sdk_ext.bbclass b/poky/meta/classes/populate_sdk_ext.bbclass
index 9f26cfc..fd0da16 100644
--- a/poky/meta/classes/populate_sdk_ext.bbclass
+++ b/poky/meta/classes/populate_sdk_ext.bbclass
@@ -676,7 +676,7 @@
 		# current working directory when first ran, nor will it set $1 when
 		# sourcing a script. That is why this has to look so ugly.
 		LOGFILE="$target_sdk_dir/preparing_build_system.log"
-		sh -c ". buildtools/environment-setup* > $LOGFILE && cd $target_sdk_dir/`dirname ${oe_init_build_env_path}` && set $target_sdk_dir && . $target_sdk_dir/${oe_init_build_env_path} $target_sdk_dir >> $LOGFILE && python $target_sdk_dir/ext-sdk-prepare.py $LOGFILE '${SDK_INSTALL_TARGETS}'" || { echo "printf 'ERROR: this SDK was not fully installed and needs reinstalling\n'" >> $env_setup_script ; exit 1 ; }
+		sh -c ". buildtools/environment-setup* > $LOGFILE && cd $target_sdk_dir/`dirname ${oe_init_build_env_path}` && set $target_sdk_dir && . $target_sdk_dir/${oe_init_build_env_path} $target_sdk_dir >> $LOGFILE && python3 $target_sdk_dir/ext-sdk-prepare.py $LOGFILE '${SDK_INSTALL_TARGETS}'" || { echo "printf 'ERROR: this SDK was not fully installed and needs reinstalling\n'" >> $env_setup_script ; exit 1 ; }
 	fi
 	if [ -e $target_sdk_dir/ext-sdk-prepare.py ]; then
 		rm $target_sdk_dir/ext-sdk-prepare.py
diff --git a/poky/meta/classes/rootfs-postcommands.bbclass b/poky/meta/classes/rootfs-postcommands.bbclass
index 2f17183..c43b9a9 100644
--- a/poky/meta/classes/rootfs-postcommands.bbclass
+++ b/poky/meta/classes/rootfs-postcommands.bbclass
@@ -308,12 +308,16 @@
 	HOST_USER_UID="$(PSEUDO_UNLOAD=1 id -u)"
 	HOST_USER_GID="$(PSEUDO_UNLOAD=1 id -g)"
 
-	find "${IMAGE_ROOTFS}" -wholename "${IMAGE_ROOTFS}/home" -prune \
-	    -user "$HOST_USER_UID" -o -group "$HOST_USER_GID" >"$contaminated"
+	find "${IMAGE_ROOTFS}" -path "${IMAGE_ROOTFS}/home" -prune -o \
+	    -user "$HOST_USER_UID" -print -o -group "$HOST_USER_GID" -print >"$contaminated"
+
+	sed -e "s,${IMAGE_ROOTFS},," $contaminated | while read line; do
+		bbwarn "Path in the rootfs is owned by the same user or group as the user running bitbake:" $line `ls -lan ${IMAGE_ROOTFS}/$line`
+	done
 
 	if [ -s "$contaminated" ]; then
-		echo "WARNING: Paths in the rootfs are owned by the same user or group as the user running bitbake. See the logfile for the specific paths."
-		cat "$contaminated" | sed "s,^,  ,"
+		bbwarn "/etc/passwd:" `cat ${IMAGE_ROOTFS}/etc/passwd`
+		bbwarn "/etc/group:" `cat ${IMAGE_ROOTFS}/etc/group`
 	fi
 }
 
diff --git a/poky/meta/classes/spdx.bbclass b/poky/meta/classes/spdx.bbclass
deleted file mode 100644
index fb78e27..0000000
--- a/poky/meta/classes/spdx.bbclass
+++ /dev/null
@@ -1,360 +0,0 @@
-# This class integrates real-time license scanning, generation of SPDX standard
-# output and verifiying license info during the building process.
-# It is a combination of efforts from the OE-Core, SPDX and Fossology projects.
-#
-# For more information on FOSSology:
-#   http://www.fossology.org
-#
-# For more information on FOSSologySPDX commandline:
-#   https://github.com/spdx-tools/fossology-spdx/wiki/Fossology-SPDX-Web-API
-#
-# For more information on SPDX:
-#   http://www.spdx.org
-#
-
-# SPDX file will be output to the path which is defined as[SPDX_MANIFEST_DIR] 
-# in ./meta/conf/licenses.conf.
-
-SPDXSSTATEDIR = "${WORKDIR}/spdx_sstate_dir"
-
-# If ${S} isn't actually the top-level source directory, set SPDX_S to point at
-# the real top-level directory.
-SPDX_S ?= "${S}"
-
-python do_spdx () {
-    import os, sys
-    import json, shutil
-
-    info = {} 
-    info['workdir'] = d.getVar('WORKDIR')
-    info['sourcedir'] = d.getVar('SPDX_S')
-    info['pn'] = d.getVar('PN')
-    info['pv'] = d.getVar('PV')
-    info['spdx_version'] = d.getVar('SPDX_VERSION')
-    info['data_license'] = d.getVar('DATA_LICENSE')
-
-    sstatedir = d.getVar('SPDXSSTATEDIR')
-    sstatefile = os.path.join(sstatedir, info['pn'] + info['pv'] + ".spdx")
-
-    manifest_dir = d.getVar('SPDX_MANIFEST_DIR')
-    info['outfile'] = os.path.join(manifest_dir, info['pn'] + ".spdx" )
-
-    info['spdx_temp_dir'] = d.getVar('SPDX_TEMP_DIR')
-    info['tar_file'] = os.path.join(info['workdir'], info['pn'] + ".tar.gz" )
-
-    # Make sure important dirs exist
-    try:
-        bb.utils.mkdirhier(manifest_dir)
-        bb.utils.mkdirhier(sstatedir)
-        bb.utils.mkdirhier(info['spdx_temp_dir'])
-    except OSError as e:
-        bb.error("SPDX: Could not set up required directories: " + str(e))
-        return
-
-    ## get everything from cache.  use it to decide if 
-    ## something needs to be rerun 
-    cur_ver_code = get_ver_code(info['sourcedir'])
-    cache_cur = False
-    if os.path.exists(sstatefile):
-        ## cache for this package exists. read it in
-        cached_spdx = get_cached_spdx(sstatefile)
-
-        if cached_spdx['PackageVerificationCode'] == cur_ver_code:
-            bb.warn("SPDX: Verification code for " + info['pn']
-                  + "is same as cache's. do nothing")
-            cache_cur = True
-        else:
-            local_file_info = setup_foss_scan(info, True, cached_spdx['Files'])
-    else:
-        local_file_info = setup_foss_scan(info, False, None)
-
-    if cache_cur:
-        spdx_file_info = cached_spdx['Files']
-        foss_package_info = cached_spdx['Package']
-        foss_license_info = cached_spdx['Licenses']
-    else:
-        ## setup fossology command
-        foss_server = d.getVar('FOSS_SERVER')
-        foss_flags = d.getVar('FOSS_WGET_FLAGS')
-        foss_full_spdx = d.getVar('FOSS_FULL_SPDX') == "true" or False
-        foss_command = "wget %s --post-file=%s %s"\
-            % (foss_flags, info['tar_file'], foss_server)
-        
-        foss_result = run_fossology(foss_command, foss_full_spdx)
-        if foss_result is not None:
-            (foss_package_info, foss_file_info, foss_license_info) = foss_result
-            spdx_file_info = create_spdx_doc(local_file_info, foss_file_info)
-            ## write to cache
-            write_cached_spdx(sstatefile, cur_ver_code, foss_package_info,
-                              spdx_file_info, foss_license_info)
-        else:
-            bb.error("SPDX: Could not communicate with FOSSology server. Command was: " + foss_command)
-            return
-    
-    ## Get document and package level information
-    spdx_header_info = get_header_info(info, cur_ver_code, foss_package_info)
-    
-    ## CREATE MANIFEST
-    create_manifest(info, spdx_header_info, spdx_file_info, foss_license_info)
-
-    ## clean up the temp stuff
-    shutil.rmtree(info['spdx_temp_dir'], ignore_errors=True)
-    if os.path.exists(info['tar_file']):
-        remove_file(info['tar_file'])
-}
-addtask spdx after do_patch before do_configure
-
-def create_manifest(info, header, files, licenses):
-    import codecs
-    with codecs.open(info['outfile'], mode='w', encoding='utf-8') as f:
-        # Write header
-        f.write(header + '\n')
-
-        # Write file data
-        for chksum, block in files.iteritems():
-            f.write("FileName: " + block['FileName'] + '\n')
-            for key, value in block.iteritems():
-                if not key == 'FileName':
-                    f.write(key + ": " + value + '\n')
-            f.write('\n')
-
-        # Write license data
-        for id, block in licenses.iteritems():
-            f.write("LicenseID: " + id + '\n')
-            for key, value in block.iteritems():
-                f.write(key + ": " + value + '\n')
-            f.write('\n')
-
-def get_cached_spdx(sstatefile):
-    import json
-    import codecs
-    cached_spdx_info = {}
-    with codecs.open(sstatefile, mode='r', encoding='utf-8') as f:
-        try:
-            cached_spdx_info = json.load(f)
-        except ValueError as e:
-            cached_spdx_info = None
-    return cached_spdx_info
-
-def write_cached_spdx(sstatefile, ver_code, package_info, files, license_info):
-    import json
-    import codecs
-    spdx_doc = {}
-    spdx_doc['PackageVerificationCode'] = ver_code
-    spdx_doc['Files'] = {}
-    spdx_doc['Files'] = files
-    spdx_doc['Package'] = {}
-    spdx_doc['Package'] = package_info
-    spdx_doc['Licenses'] = {}
-    spdx_doc['Licenses'] = license_info
-    with codecs.open(sstatefile, mode='w', encoding='utf-8') as f:
-        f.write(json.dumps(spdx_doc))
-
-def setup_foss_scan(info, cache, cached_files):
-    import errno, shutil
-    import tarfile
-    file_info = {}
-    cache_dict = {}
-
-    for f_dir, f in list_files(info['sourcedir']):
-        full_path = os.path.join(f_dir, f)
-        abs_path = os.path.join(info['sourcedir'], full_path)
-        dest_dir = os.path.join(info['spdx_temp_dir'], f_dir)
-        dest_path = os.path.join(info['spdx_temp_dir'], full_path)
-
-        checksum = hash_file(abs_path)
-        if not checksum is None:
-            file_info[checksum] = {}
-            ## retain cache information if it exists
-            if cache and checksum in cached_files:
-                file_info[checksum] = cached_files[checksum]
-            ## have the file included in what's sent to the FOSSology server
-            else:
-                file_info[checksum]['FileName'] = full_path
-                try:
-                    bb.utils.mkdirhier(dest_dir)
-                    shutil.copyfile(abs_path, dest_path)
-                except OSError as e:
-                    bb.warn("SPDX: mkdirhier failed: " + str(e))
-                except shutil.Error as e:
-                    bb.warn("SPDX: copyfile failed: " + str(e))
-                except IOError as e:
-                    bb.warn("SPDX: copyfile failed: " + str(e))
-        else:
-            bb.warn("SPDX: Could not get checksum for file: " + f)
-    
-    with tarfile.open(info['tar_file'], "w:gz") as tar:
-        tar.add(info['spdx_temp_dir'], arcname=os.path.basename(info['spdx_temp_dir']))
-    
-    return file_info
-
-def remove_file(file_name):
-    try:
-        os.remove(file_name)
-    except OSError as e:
-        pass
-
-def list_files(dir):
-    for root, subFolders, files in os.walk(dir):
-        for f in files:
-            rel_root = os.path.relpath(root, dir)
-            yield rel_root, f
-    return
-
-def hash_file(file_name):
-    from bb.utils import sha1_file
-    return sha1_file(file_name)
-
-def hash_string(data):
-    import hashlib
-    sha1 = hashlib.sha1()
-    sha1.update(data.encode('utf-8'))
-    return sha1.hexdigest()
-
-def run_fossology(foss_command, full_spdx):
-    import string, re
-    import subprocess
-
-    try:
-        foss_output = subprocess.check_output(foss_command.split(),
-                stderr=subprocess.STDOUT).decode('utf-8')
-    except subprocess.CalledProcessError as e:
-        return None
-
-    foss_output = foss_output.replace('\r', '')
-
-    # Package info
-    package_info = {}
-    if full_spdx:
-        # All mandatory, only one occurrence
-        package_info['PackageCopyrightText'] = re.findall('PackageCopyrightText: (.*?</text>)', foss_output, re.S)[0]
-        package_info['PackageLicenseDeclared'] = re.findall('PackageLicenseDeclared: (.*)', foss_output)[0]
-        package_info['PackageLicenseConcluded'] = re.findall('PackageLicenseConcluded: (.*)', foss_output)[0]
-        # These may be more than one
-        package_info['PackageLicenseInfoFromFiles'] = re.findall('PackageLicenseInfoFromFiles: (.*)', foss_output)
-    else:
-        DEFAULT = "NOASSERTION"
-        package_info['PackageCopyrightText'] = "<text>" + DEFAULT + "</text>"
-        package_info['PackageLicenseDeclared'] = DEFAULT
-        package_info['PackageLicenseConcluded'] = DEFAULT
-        package_info['PackageLicenseInfoFromFiles'] = []
-
-    # File info
-    file_info = {}
-    records = []
-    # FileName is also in PackageFileName, so we match on FileType as well.
-    records = re.findall('FileName:.*?FileType:.*?</text>', foss_output, re.S)
-    for rec in records:
-        chksum = re.findall('FileChecksum: SHA1: (.*)\n', rec)[0]
-        file_info[chksum] = {}
-        file_info[chksum]['FileCopyrightText'] = re.findall('FileCopyrightText: '
-            + '(.*?</text>)', rec, re.S )[0]
-        fields = ['FileName', 'FileType', 'LicenseConcluded', 'LicenseInfoInFile']
-        for field in fields:
-            file_info[chksum][field] = re.findall(field + ': (.*)', rec)[0]
-
-    # Licenses
-    license_info = {}
-    licenses = []
-    licenses = re.findall('LicenseID:.*?LicenseName:.*?\n', foss_output, re.S)
-    for lic in licenses:
-        license_id = re.findall('LicenseID: (.*)\n', lic)[0]
-        license_info[license_id] = {}
-        license_info[license_id]['ExtractedText'] = re.findall('ExtractedText: (.*?</text>)', lic, re.S)[0]
-        license_info[license_id]['LicenseName'] = re.findall('LicenseName: (.*)', lic)[0]
-
-    return (package_info, file_info, license_info)
-
-def create_spdx_doc(file_info, scanned_files):
-    import json
-    ## push foss changes back into cache
-    for chksum, lic_info in scanned_files.iteritems():
-        if chksum in file_info:
-            file_info[chksum]['FileType'] = lic_info['FileType']
-            file_info[chksum]['FileChecksum: SHA1'] = chksum
-            file_info[chksum]['LicenseInfoInFile'] = lic_info['LicenseInfoInFile']
-            file_info[chksum]['LicenseConcluded'] = lic_info['LicenseConcluded']
-            file_info[chksum]['FileCopyrightText'] = lic_info['FileCopyrightText']
-        else:
-            bb.warn("SPDX: " + lic_info['FileName'] + " : " + chksum
-                + " : is not in the local file info: "
-                + json.dumps(lic_info, indent=1))
-    return file_info
-
-def get_ver_code(dirname):
-    chksums = []
-    for f_dir, f in list_files(dirname):
-        path = os.path.join(dirname, f_dir, f)
-        hash = hash_file(path)
-        if not hash is None:
-            chksums.append(hash)
-        else:
-            bb.warn("SPDX: Could not hash file: " + path)
-    ver_code_string = ''.join(chksums).lower()
-    ver_code = hash_string(ver_code_string)
-    return ver_code
-
-def get_header_info(info, spdx_verification_code, package_info):
-    """
-        Put together the header SPDX information.
-        Eventually this needs to become a lot less
-        of a hardcoded thing.
-    """
-    from datetime import datetime
-    import os
-    head = []
-    DEFAULT = "NOASSERTION"
-
-    package_checksum = hash_file(info['tar_file'])
-    if package_checksum is None:
-        package_checksum = DEFAULT
-
-    ## document level information
-    head.append("## SPDX Document Information")
-    head.append("SPDXVersion: " + info['spdx_version'])
-    head.append("DataLicense: " + info['data_license'])
-    head.append("DocumentComment: <text>SPDX for "
-        + info['pn'] + " version " + info['pv'] + "</text>")
-    head.append("")
-
-    ## Creator information
-    ## Note that this does not give time in UTC.
-    now = datetime.now().strftime('%Y-%m-%dT%H:%M:%SZ')
-    head.append("## Creation Information")
-    ## Tools are supposed to have a version, but FOSSology+SPDX provides none.
-    head.append("Creator: Tool: FOSSology+SPDX")
-    head.append("Created: " + now)
-    head.append("CreatorComment: <text>UNO</text>")
-    head.append("")
-
-    ## package level information
-    head.append("## Package Information")
-    head.append("PackageName: " + info['pn'])
-    head.append("PackageVersion: " + info['pv'])
-    head.append("PackageFileName: " + os.path.basename(info['tar_file']))
-    head.append("PackageSupplier: Person:" + DEFAULT)
-    head.append("PackageDownloadLocation: " + DEFAULT)
-    head.append("PackageSummary: <text></text>")
-    head.append("PackageOriginator: Person:" + DEFAULT)
-    head.append("PackageChecksum: SHA1: " + package_checksum)
-    head.append("PackageVerificationCode: " + spdx_verification_code)
-    head.append("PackageDescription: <text>" + info['pn']
-        + " version " + info['pv'] + "</text>")
-    head.append("")
-    head.append("PackageCopyrightText: "
-        + package_info['PackageCopyrightText'])
-    head.append("")
-    head.append("PackageLicenseDeclared: "
-        + package_info['PackageLicenseDeclared'])
-    head.append("PackageLicenseConcluded: "
-        + package_info['PackageLicenseConcluded'])
-
-    for licref in package_info['PackageLicenseInfoFromFiles']:
-        head.append("PackageLicenseInfoFromFiles: " + licref)
-    head.append("")
-    
-    ## header for file level
-    head.append("## File Information")
-    head.append("")
-
-    return '\n'.join(head)
diff --git a/poky/meta/classes/uboot-sign.bbclass b/poky/meta/classes/uboot-sign.bbclass
index 982ed46..713196d 100644
--- a/poky/meta/classes/uboot-sign.bbclass
+++ b/poky/meta/classes/uboot-sign.bbclass
@@ -117,15 +117,16 @@
 	fi
 }
 
+do_deploy_prepend_pn-${UBOOT_PN}() {
+	if [ "${UBOOT_SIGN_ENABLE}" = "1" -a -n "${UBOOT_DTB_BINARY}" ]; then
+		concat_dtb
+	fi
+}
+
 python () {
     if d.getVar('UBOOT_SIGN_ENABLE') == '1' and d.getVar('PN') == d.getVar('UBOOT_PN') and d.getVar('UBOOT_DTB_BINARY'):
         kernel_pn = d.getVar('PREFERRED_PROVIDER_virtual/kernel')
 
         # Make "bitbake u-boot -cdeploy" deploys the signed u-boot.dtb
         d.appendVarFlag('do_deploy', 'depends', ' %s:do_deploy' % kernel_pn)
-
-        # kernerl's do_deploy is a litle special, so we can't use
-        # do_deploy_append, otherwise it would override
-        # kernel_do_deploy.
-        d.appendVarFlag('do_deploy', 'prefuncs', ' concat_dtb')
 }