[PATCH v2 3/4] linux-custom: Use uncompressed kernel image on arm64

[Jan Kiszka <jan.kiszka@siemens.com>]

U-Boot does not directly support decompression on bootloader side like
Image.gz would require. We would have to enable the unzip command and
write special scripts that perform the decompression prior to calling
booti. As the Debian kernel also comes uncompressed, choose that path
instead.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---

Changes in v2:
 - "gunzip $vmlinuz.gz", to make the source clearer

 meta/recipes-kernel/linux/files/build-kernel.sh | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/meta/recipes-kernel/linux/files/build-kernel.sh b/meta/recipes-kernel/linux/files/build-kernel.sh
index 8b58e93..611d96f 100644
--- a/meta/recipes-kernel/linux/files/build-kernel.sh
+++ b/meta/recipes-kernel/linux/files/build-kernel.sh
@@ -95,6 +95,13 @@ if [ \"\$1\" != upgrade ] && command -v linux-update-symlinks >/dev/null; then\\
 	linux-update-symlinks remove ${PV}  /boot/vmlinuz-${PV}\\
 fi"
 
+# Make sure arm64 kernels are decompressed
+if [ "$target_arch" = "arm64" ]; then
+	vmlinuz=${REPACK_LINUX_IMAGE_DIR}/boot/vmlinuz-${PV}
+	mv $vmlinuz $vmlinuz.gz
+	gunzip $vmlinuz.gz
+fi
+
 dpkg-gencontrol -crepack/debian/control \
 	-lrepack/debian/changelog \
 	-frepack/debian/files \
-- 
2.16.4