1 files changed, 31 insertions, 2 deletions

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index af58887f28..f3a55535fb 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -88,7 +88,7 @@ do_compile_kernelmodules() {
                 bbnote "no modules to compile"
         fi
 }
-addtask compile_kernelmodules after do_compile before do_install
+addtask compile_kernelmodules after do_compile before do_strip
 
 kernel_do_install() {
         #
@@ -289,6 +289,35 @@ python split_kernel_packages () {
     do_split_packages(d, root='/lib/firmware', file_regex='^(.*)\.cis$', output_pattern='kernel-firmware-%s', description='Firmware for %s', recursive=True, extra_depends='')
 }
 
+do_strip() {
+        if [ -n "${KERNEL_IMAGE_STRIP_EXTRA_SECTIONS}" ]; then
+                if [[ "${KERNEL_IMAGETYPE}" != "vmlinux" ]]; then
+                        bbwarn "image type will not be stripped (not supported): ${KERNEL_IMAGETYPE}"
+                        return
+                fi
+
+                cd ${B}
+                headers=`"$CROSS_COMPILE"readelf -S ${KERNEL_OUTPUT} | \
+                          grep "^ \{1,\}\[[0-9 ]\{1,\}\] [^ ]" | \
+                          sed "s/^ \{1,\}\[[0-9 ]\{1,\}\] //" | \
+                          gawk '{print $1}'`
+
+                for str in ${KERNEL_IMAGE_STRIP_EXTRA_SECTIONS}; do {
+                        if [[ "$headers" != *"$str"* ]]; then
+                                bbwarn "Section not found: $str";
+                        fi
+
+                        "$CROSS_COMPILE"strip -s -R $str ${KERNEL_OUTPUT}
+                }; done
+
+                bbnote "KERNEL_IMAGE_STRIP_EXTRA_SECTIONS is set, stripping sections:" \
+                        "${KERNEL_IMAGE_STRIP_EXTRA_SECTIONS}"
+        fi;
+}
+do_strip[dirs] = "${B}"
+
+addtask do_strip before do_sizecheck after do_kernel_link_vmlinux
+
 # Support checking the kernel size since some kernels need to reside in partitions
 # with a fixed length or there is a limit in transferring the kernel to memory
 do_sizecheck() {
@@ -302,7 +331,7 @@ do_sizecheck() {
 }
 do_sizecheck[dirs] = "${B}"
 
-addtask sizecheck before do_install after do_kernel_link_vmlinux
+addtask sizecheck before do_install after do_strip
 
 KERNEL_IMAGE_BASE_NAME ?= "${KERNEL_IMAGETYPE}-${PE}-${PV}-${PR}-${MACHINE}-${DATETIME}"
 # Don't include the DATETIME variable in the sstate package signatures