image_types bbclass: use compression framework for jffs2 sum images

I got hit by a missing dependency in generation of sum.jffs2 images - at
runtime, when images are generated using bitbake pool, it is possible
for sum.jffs2 image to be scheduled for generation before jffs2 image is
fully generated.

Insted of adding additional hacks, reimplement sum.jffs2 generation as a
compression scheme on top of plain jffs2 images. For now support for
sum.jffs2 images is left in, it will be removed by the subsequent
commit.

Signed-off-by: Dmitry Eremin-Solenikov <dmitry_eremin@mentor.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 393bfa82ebda21e8301c26462b7ce965a2d9fff5..be56abb2f1523104412e2205e21c6176d2d96ce7 100644 (file)
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -33,6 +33,7 @@ XZ_COMPRESSION_LEVEL ?= "-e -6"
 XZ_INTEGRITY_CHECK ?= "crc32"
 XZ_THREADS ?= "-T 0"
 
+JFFS2_SUM_EXTRA_ARGS ?= ""
 IMAGE_CMD_jffs2 = "mkfs.jffs2 --root=${IMAGE_ROOTFS} --faketime --output=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.jffs2 ${EXTRA_IMAGECMD}"
 IMAGE_CMD_sum.jffs2 = "sumtool -i ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.jffs2 -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.sum.jffs2 ${EXTRA_IMAGECMD}"
 
@@ -128,19 +129,21 @@ IMAGE_DEPENDS_ubi = "mtd-utils-native"
 IMAGE_DEPENDS_ubifs = "mtd-utils-native"
 
 # This variable is available to request which values are suitable for IMAGE_FSTYPES
-IMAGE_TYPES = "jffs2 sum.jffs2 cramfs ext2 ext2.gz ext2.bz2 ext3 ext3.gz ext2.lzma btrfs iso hddimg squashfs squashfs-xz ubi ubifs tar tar.gz tar.bz2 tar.xz tar.lz4 cpio cpio.gz cpio.xz cpio.lzma cpio.lz4 vmdk elf"
+IMAGE_TYPES = "jffs2 jffs2.sum sum.jffs2 cramfs ext2 ext2.gz ext2.bz2 ext3 ext3.gz ext2.lzma btrfs iso hddimg squashfs squashfs-xz ubi ubifs tar tar.gz tar.bz2 tar.xz tar.lz4 cpio cpio.gz cpio.xz cpio.lzma cpio.lz4 vmdk elf"
 
-COMPRESSIONTYPES = "gz bz2 lzma xz lz4"
+COMPRESSIONTYPES = "gz bz2 lzma xz lz4 sum"
 COMPRESS_CMD_lzma = "lzma -k -f -7 ${IMAGE_NAME}.rootfs.${type}"
 COMPRESS_CMD_gz = "gzip -f -9 -c ${IMAGE_NAME}.rootfs.${type} > ${IMAGE_NAME}.rootfs.${type}.gz"
 COMPRESS_CMD_bz2 = "bzip2 -f -k ${IMAGE_NAME}.rootfs.${type}"
 COMPRESS_CMD_xz = "xz -f -k -c ${XZ_COMPRESSION_LEVEL} ${XZ_THREADS} --check=${XZ_INTEGRITY_CHECK} ${IMAGE_NAME}.rootfs.${type} > ${IMAGE_NAME}.rootfs.${type}.xz"
 COMPRESS_CMD_lz4 = "lz4c -9 -c ${IMAGE_NAME}.rootfs.${type} > ${IMAGE_NAME}.rootfs.${type}.lz4"
+COMPRESS_CMD_sum = "sumtool -i ${IMAGE_NAME}.rootfs.${type} -o ${IMAGE_NAME}.rootfs.${type}.sum ${JFFS2_SUM_EXTRA_ARGS}"
 COMPRESS_DEPENDS_lzma = "xz-native"
 COMPRESS_DEPENDS_gz = ""
 COMPRESS_DEPENDS_bz2 = ""
 COMPRESS_DEPENDS_xz = "xz-native"
 COMPRESS_DEPENDS_lz4 = "lz4-native"
+COMPRESS_DEPENDS_sum = "mtd-utils-native"
 
 RUNNABLE_IMAGE_TYPES ?= "ext2 ext3"
 RUNNABLE_MACHINE_PATTERNS ?= "qemu"