[OE-core] [PATCH 1/2] image_types: Add support to compress initramfs with lz4

[Vesa Jääskeläinen]

Changed to use lz4 as lz4c seems to be deprecated.

Removed use of redirection in favor of using output file.

As Linux kernel supports only legacy format for initial ramdisk add
COMPRESS_CMD_lz4_legacy mode in case some users are using newer format.

Signed-off-by: Vesa Jääskeläinen <vesa.jaaskelainen at vaisala.com>
---
 meta/classes/image_types.bbclass       | 3 ++-
 meta/classes/image_types_uboot.bbclass | 5 ++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index a7fffbc..772cb35 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -333,7 +333,8 @@ CONVERSION_CMD_lzma = "lzma -k -f -7 ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
 CONVERSION_CMD_gz = "gzip -f -9 -c ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.gz"
 CONVERSION_CMD_bz2 = "pbzip2 -f -k ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
 CONVERSION_CMD_xz = "xz -f -k -c ${XZ_COMPRESSION_LEVEL} ${XZ_THREADS} --check=${XZ_INTEGRITY_CHECK} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.xz"
-CONVERSION_CMD_lz4 = "lz4c -9 -c ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.lz4"
+CONVERSION_CMD_lz4 = "lz4 -9 -z ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.lz4"
+CONVERSION_CMD_lz4_legacy = "lz4 -9 -z -l ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.lz4"
 CONVERSION_CMD_zip = "zip ${ZIP_COMPRESSION_LEVEL} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.zip ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
 CONVERSION_CMD_sum = "sumtool -i ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} -o ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.sum ${JFFS2_SUM_EXTRA_ARGS}"
 CONVERSION_CMD_md5sum = "md5sum ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.md5sum"
diff --git a/meta/classes/image_types_uboot.bbclass b/meta/classes/image_types_uboot.bbclass
index 6c8c1ff..49028fa 100644
--- a/meta/classes/image_types_uboot.bbclass
+++ b/meta/classes/image_types_uboot.bbclass
@@ -8,7 +8,7 @@ oe_mkimage () {
     fi
 }
 
-CONVERSIONTYPES += "gz.u-boot bz2.u-boot lzma.u-boot u-boot"
+CONVERSIONTYPES += "gz.u-boot bz2.u-boot lz4.u-boot lzma.u-boot u-boot"
 
 CONVERSION_DEPENDS_u-boot = "u-boot-mkimage-native"
 CONVERSION_CMD_u-boot      = "oe_mkimage ${IMAGE_NAME}.rootfs.${type} none"
@@ -19,6 +19,9 @@ CONVERSION_CMD_gz.u-boot      = "${CONVERSION_CMD_gz}; oe_mkimage ${IMAGE_NAME}.
 CONVERSION_DEPENDS_bz2.u-boot = "u-boot-mkimage-native"
 CONVERSION_CMD_bz2.u-boot      = "${CONVERSION_CMD_bz2}; oe_mkimage ${IMAGE_NAME}.rootfs.${type}.bz2 bzip2 clean"
 
+CONVERSION_DEPENDS_lz4.u-boot = "u-boot-mkimage-native"
+CONVERSION_CMD_lz4.u-boot      = "${CONVERSION_CMD_lz4_legacy}; oe_mkimage ${IMAGE_NAME}.rootfs.${type}.lz4 lz4 clean"
+
 CONVERSION_DEPENDS_lzma.u-boot = "u-boot-mkimage-native"
 CONVERSION_CMD_lzma.u-boot      = "${CONVERSION_CMD_lzma}; oe_mkimage ${IMAGE_NAME}.rootfs.${type}.lzma lzma clean"
 
-- 
2.1.4