kernel-uboot: support compressed kernel on MIPS

MIPS generates vmlinuz.bin when compression in the kernel build is
enabled, including any necessary objcopy so we can leverage that
and skip our manual invocation of objcopy here. We just have to
put the file into the right place for the rest of the build to
find it.

(From OE-Core rev: 3db4004b2982a297a02ebeb6b0cb90cebdb44a0a)

Signed-off-by: André Draszik <adraszik@tycoint.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

(cherry picked from commit 00bc7682473c2558d72ba42c182f8e3bd445f8af)
Signed-off-by: André Draszik <adraszik@tycoint.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/meta/classes/kernel-uboot.bbclass b/meta/classes/kernel-uboot.bbclass
index 868e97d7a7..87f02654fa 100644
--- a/meta/classes/kernel-uboot.bbclass
+++ b/meta/classes/kernel-uboot.bbclass
@@ -3,13 +3,19 @@ uboot_prep_kimage() {
                 vmlinux_path="arch/${ARCH}/boot/compressed/vmlinux"
                 linux_suffix=""
                 linux_comp="none"
+        elif [ -e arch/${ARCH}/boot/vmlinuz.bin ]; then
+                rm -f linux.bin
+                cp -l arch/${ARCH}/boot/vmlinuz.bin linux.bin
+                vmlinux_path=""
+                linux_suffix=""
+                linux_comp="none"
         else
                 vmlinux_path="vmlinux"
                 linux_suffix=".gz"
                 linux_comp="gzip"
         fi
 
-        ${OBJCOPY} -O binary -R .note -R .comment -S "${vmlinux_path}" linux.bin
+        [ -n "${vmlinux_path}" ] && ${OBJCOPY} -O binary -R .note -R .comment -S "${vmlinux_path}" linux.bin
 
         if [ "${linux_comp}" != "none" ] ; then
                 gzip -9 linux.bin