diff --git a/poky/meta/recipes-kernel/linux/kernel-devsrc.bb b/poky/meta/recipes-kernel/linux/kernel-devsrc.bb
index 84e9923..21b4283 100644
--- a/poky/meta/recipes-kernel/linux/kernel-devsrc.bb
+++ b/poky/meta/recipes-kernel/linux/kernel-devsrc.bb
@@ -112,6 +112,10 @@
 	if [ "${ARCH}" = "arm64" ]; then
 	    cp -a --parents arch/arm64/kernel/vdso/vdso.lds $kerneldir/build/
 	fi
+	if [ "${ARCH}" = "powerpc" ]; then
+	    cp -a --parents arch/powerpc/kernel/vdso32/vdso32.lds $kerneldir/build 2>/dev/null || :
+	    cp -a --parents arch/powerpc/kernel/vdso64/vdso64.lds $kerneldir/build 2>/dev/null || :
+	fi
 
 	cp -a include $kerneldir/build/include
 
@@ -163,6 +167,14 @@
             cp -a --parents arch/arm64/kernel/vdso/gen_vdso_offsets.sh $kerneldir/build/
 
             cp -a --parents arch/arm64/kernel/module.lds $kerneldir/build/ 2>/dev/null || :
+
+            # 5.13+ needs these tools
+            cp -a --parents arch/arm64/tools/gen-cpucaps.awk $kerneldir/build/ 2>/dev/null || :
+            cp -a --parents arch/arm64/tools/cpucaps $kerneldir/build/ 2>/dev/null || :
+
+            if [ -e $kerneldir/build/arch/arm64/tools/gen-cpucaps.awk ]; then
+                 sed -i -e "s,#!.*awk.*,#!${USRBINPATH}/env awk," $kerneldir/build/arch/arm64/tools/gen-cpucaps.awk
+            fi
 	fi
 
 	if [ "${ARCH}" = "powerpc" ]; then
@@ -170,6 +182,8 @@
 	    cp -a --parents arch/${ARCH}/kernel/syscalls/syscall.tbl $kerneldir/build/ 2>/dev/null || :
 	    cp -a --parents arch/${ARCH}/kernel/syscalls/syscalltbl.sh $kerneldir/build/ 2>/dev/null || :
 	    cp -a --parents arch/${ARCH}/kernel/syscalls/syscallhdr.sh $kerneldir/build/ 2>/dev/null || :
+	    cp -a --parents arch/${ARCH}/kernel/vdso32/* $kerneldir/build/ 2>/dev/null || :
+	    cp -a --parents arch/${ARCH}/kernel/vdso64/* $kerneldir/build/ 2>/dev/null || :
 	fi
 
 	# include the machine specific headers for ARM variants, if available.
@@ -273,7 +287,11 @@
         sed -i 's/ifneq "$(LD)" ".*-linux-.*ld.bfd.*$/ifneq "$(LD)" "ld"/' "$kerneldir/build/include/config/auto.conf.cmd"
         sed -i 's/ifneq "$(AR)" ".*-linux-.*ar.*$/ifneq "$(AR)" "ar"/' "$kerneldir/build/include/config/auto.conf.cmd"
         sed -i 's/ifneq "$(OBJCOPY)" ".*-linux-.*objcopy.*$/ifneq "$(OBJCOPY)" "objcopy"/' "$kerneldir/build/include/config/auto.conf.cmd"
-        sed -i 's/ifneq "$(NM)" ".*-linux-.*nm.*$/ifneq "$(NM)" "nm"/' "$kerneldir/build/include/config/auto.conf.cmd"
+        if [ "${ARCH}" = "powerpc" ]; then
+            sed -i 's/ifneq "$(NM)" ".*-linux-.*nm.*$/ifneq "$(NM)" "nm --synthetic"/' "$kerneldir/build/include/config/auto.conf.cmd"
+        else
+            sed -i 's/ifneq "$(NM)" ".*-linux-.*nm.*$/ifneq "$(NM)" "nm"/' "$kerneldir/build/include/config/auto.conf.cmd"
+        fi
         sed -i 's/ifneq "$(HOSTCXX)" ".*$/ifneq "$(HOSTCXX)" "g++"/' "$kerneldir/build/include/config/auto.conf.cmd"
         sed -i 's/ifneq "$(HOSTCC)" ".*$/ifneq "$(HOSTCC)" "gcc"/' "$kerneldir/build/include/config/auto.conf.cmd"
         sed -i 's/ifneq "$(CC_VERSION_TEXT)".*\(gcc.*\)"/ifneq "$(CC_VERSION_TEXT)" "\1"/' "$kerneldir/build/include/config/auto.conf.cmd"
@@ -307,3 +325,7 @@
 RDEPENDS_${PN} += "${@bb.utils.contains('ARCH', 'x86', 'elfutils', '', d)}"
 # 5.8+ needs gcc-plugins libmpc-dev
 RDEPENDS_${PN} += "gcc-plugins libmpc-dev"
+# 5.13+ needs awk for arm64
+RDEPENDS_${PN}_append_aarch64 = " gawk"
+# 5.13+ needs grep for powerpc
+RDEPENDS_${PN}_append_powerpc = " grep"