image_types: add Zstandard conversion support

Add Zstandard (or just Zstd) compression support. This allows to
create Zstd compressed tarballs by using tar.zst as IMAGE_FSTYPES.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index c7af8890752939eedd2366c8b442f363e4e8c937..f82f1d886246421e34a7f5b8c85166a5bb554a31 100644 (file)
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -59,6 +59,8 @@ XZ_INTEGRITY_CHECK ?= "crc32"
 
 ZIP_COMPRESSION_LEVEL ?= "-9"
 
+ZSTD_COMPRESSION_LEVEL ?= "-3"
+
 JFFS2_SUM_EXTRA_ARGS ?= ""
 IMAGE_CMD_jffs2 = "mkfs.jffs2 --root=${IMAGE_ROOTFS} --faketime --output=${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.jffs2 ${EXTRA_IMAGECMD}"
 
@@ -269,7 +271,7 @@ IMAGE_TYPES = " \
     hddimg \
     squashfs squashfs-xz squashfs-lzo squashfs-lz4 \
     ubi ubifs multiubi \
-    tar tar.gz tar.bz2 tar.xz tar.lz4 \
+    tar tar.gz tar.bz2 tar.xz tar.lz4 tar.zst \
     cpio cpio.gz cpio.xz cpio.lzma cpio.lz4 \
     wic wic.gz wic.bz2 wic.lzma \
     container \
@@ -282,7 +284,7 @@ IMAGE_TYPES = " \
 # CONVERSION_CMD/DEPENDS.
 COMPRESSIONTYPES ?= ""
 
-CONVERSIONTYPES = "gz bz2 lzma xz lz4 lzo zip sum md5sum sha1sum sha224sum sha256sum sha384sum sha512sum bmap u-boot vmdk vdi qcow2 base64 ${COMPRESSIONTYPES}"
+CONVERSIONTYPES = "gz bz2 lzma xz lz4 lzo zip zst sum md5sum sha1sum sha224sum sha256sum sha384sum sha512sum bmap u-boot vmdk vdi qcow2 base64 ${COMPRESSIONTYPES}"
 CONVERSION_CMD_lzma = "lzma -k -f -7 ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
 CONVERSION_CMD_gz = "gzip -f -9 -n -c --rsyncable ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.gz"
 CONVERSION_CMD_bz2 = "pbzip2 -f -k ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
@@ -290,6 +292,7 @@ CONVERSION_CMD_xz = "xz -f -k -c ${XZ_COMPRESSION_LEVEL} ${XZ_DEFAULTS} --check=
 CONVERSION_CMD_lz4 = "lz4 -9 -z -l ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.lz4"
 CONVERSION_CMD_lzo = "lzop -9 ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
 CONVERSION_CMD_zip = "zip ${ZIP_COMPRESSION_LEVEL} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.zip ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
+CONVERSION_CMD_zst = "zstd -f -k -T0 -c ${ZSTD_COMPRESSION_LEVEL} ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.zst"
 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"
 CONVERSION_CMD_sha1sum = "sha1sum ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.sha1sum"
@@ -310,6 +313,7 @@ CONVERSION_DEPENDS_xz = "xz-native"
 CONVERSION_DEPENDS_lz4 = "lz4-native"
 CONVERSION_DEPENDS_lzo = "lzop-native"
 CONVERSION_DEPENDS_zip = "zip-native"
+CONVERSION_DEPENDS_zst = "zstd-native"
 CONVERSION_DEPENDS_sum = "mtd-utils-native"
 CONVERSION_DEPENDS_bmap = "bmap-tools-native"
 CONVERSION_DEPENDS_u-boot = "u-boot-tools-native"