kernel-uboot: Handle gzip and lzo compression options

Since 5c72105e29 ("kernel-uboot: allow compression option to be configurable")
it is possible to select kernel compression method, however the resulting
image is always compressed with gzip, so selecting any other method than
gzip results in unbootable images. Add support for lzo for starters, since
that is fast to decompress and useful in low boot time scenarios.

Note that we should likely add some check for unsupported compression
methods. We should also add dependency on lzop-native I think.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Richard Purdie <richard.purdie@linuxfoundation.org>
Cc: Sinan Kaya <okaya@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/kernel-uboot.bbclass b/meta/classes/kernel-uboot.bbclass
index b1e7ac05c2302bba1f6ef8201753327496dfcf0d..2daa068298950fa7f2d0aaa232c4c805e4f9fb46 100644 (file)
--- a/meta/classes/kernel-uboot.bbclass
+++ b/meta/classes/kernel-uboot.bbclass
@@ -22,7 +22,11 @@ uboot_prep_kimage() {
        [ -n "${vmlinux_path}" ] && ${OBJCOPY} -O binary -R .note -R .comment -S "${vmlinux_path}" linux.bin
 
        if [ "${linux_comp}" != "none" ] ; then
-               gzip -9 linux.bin
+               if [ "${linux_comp}" = "gzip" ] ; then
+                       gzip -9 linux.bin
+               elif [ "${linux_comp}" = "lzo" ] ; then
+                       lzop -9 linux.bin
+               fi
                mv -f "linux.bin${linux_suffix}" linux.bin
        fi