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image_types.bbclass: implement jffs2 summary images (sum.jffs2) 

* Building the jffs2 filesystem to include summary information speeds up
* the mount process considerably at the cost of increased size.
* The rate of speedup is generally higher on NAND chips and on the chips
* where the erase block size is large.

(From OE-Core rev: 2cb6a0d7aaa1ba712a899ee77a4c720da4e50214)

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Andrea Adami 2011-12-07 00:23:06 +01:00 committed by Richard Purdie
parent 64ee1e6e71
commit 5e6261decb
1 changed files with 4 additions and 1 deletions
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5
meta/classes/image_types.bbclass
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@ -35,6 +35,8 @@ XZ_COMPRESSION_LEVEL ?= "-e -9"
XZ_INTEGRITY_CHECK ?= "crc32"
IMAGE_CMD_jffs2 = "mkfs.jffs2 --root=${IMAGE_ROOTFS} --faketime --output=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.jffs2 ${EXTRA_IMAGECMD}"
IMAGE_CMD_sum.jffs2 = "${IMAGE_CMD_jffs2} && sumtool -i ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.jffs2 \
-o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.sum.jffs2 ${EXTRA_IMAGECMD}"
IMAGE_CMD_cramfs = "mkcramfs ${IMAGE_ROOTFS} ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cramfs ${EXTRA_IMAGECMD}"
@ -138,6 +140,7 @@ EXTRA_IMAGECMD_btrfs ?= ""
IMAGE_DEPENDS = ""
IMAGE_DEPENDS_jffs2 = "mtd-utils-native"
IMAGE_DEPENDS_sum.jffs2 = "mtd-utils-native"
IMAGE_DEPENDS_cramfs = "cramfs-native"
IMAGE_DEPENDS_ext2 = "genext2fs-native"
IMAGE_DEPENDS_ext2.gz = "genext2fs-native"
@ -157,4 +160,4 @@ 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 cramfs ext2 ext2.gz ext2.bz2 ext3 ext3.gz ext2.lzma live squashfs squashfs-lzma ubi tar tar.gz tar.bz2 tar.xz cpio cpio.gz cpio.xz cpio.lzma"
IMAGE_TYPES = "jffs2 sum.jffs2 cramfs ext2 ext2.gz ext2.bz2 ext3 ext3.gz ext2.lzma live squashfs squashfs-lzma ubi tar tar.gz tar.bz2 tar.xz cpio cpio.gz cpio.xz cpio.lzma"