[OE-core] [RFC] IMAGE_CMD_sdimg first cut
Joel A Fernandes
joelagnel at ti.com
Fri Aug 26 19:54:20 UTC 2011
Here's an initial version of the SDCard image build functionality. Its not a direct copy paste from Narcissus, I had to replace paths and am copying files from IMAGE_ROOTFS instead of how Narcissus untars into a mount point.
Not build tested.
@Koen and all, here are some questions:
1. Where in openembedded-core do we store the "img.gz" template files so that they are available to image.bbclass?
I'm thinking in the images/ directory where the beagleboard-gnome-image bb recipe is itself stored? What's a clean way?
2. I've hardcoded loop device names just like Narcissus, what's a cleaner way?
3. Same as 2. but for temporary mount point names?
4. For copying ubifs, how do we ensure IMAGE_CMD_ubifs runs first before IMAGE_CMD_sdimg does?
Thanks, if you get a chance to work on it, that'll be cool. I will continue to work on it after my class.
Signed-off-by: Joel A Fernandes <joelagnel at ti.com>
Cc: Koen Kooi <k-kooi at ti.com>
Cc: Jason Kridner <jdk at ti.com>
---
meta/classes/image_types.bbclass | 99 ++++++++++++++++++++++++++++++++++++++
1 files changed, 99 insertions(+), 0 deletions(-)
diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index cd901c1..39e7984 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -88,6 +88,105 @@ IMAGE_CMD_ubi () {
}
IMAGE_CMD_ubifs = "mkfs.ubifs -r ${IMAGE_ROOTFS} -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.ubifs.img ${MKUBIFS_ARGS}"
+IMAGE_CMD_sdimg () {
+ MD5SUM_SD="$(md5sum ${IMAGE_ROOTFS}/boot/uImage | awk '{print $1}')"
+ for sdsize in $(ls ${WORKDIR}/conf/sd/sd-master* | sed -e s:${WORKDIR}/conf/sd/sd-master-::g -e 's:.img.gz::g' | xargs echo) ; do
+ echo "SD size: $sdsize"
+
+ if true ; then
+ echo "No cached SD image found, generating new one"
+ zcat ${WORKDIR}/conf/sd/sd-master-$sdsize.img.gz > ${WORKDIR}/sd.img
+ /sbin/fdisk -l -u ${WORKDIR}/sd.img
+
+ # Output looks like:
+ # Disk sd-master-1GiB.img: 0 MB, 0 bytes
+ # 255 heads, 63 sectors/track, 0 cylinders, total 0 sectors
+ # Units = sectors of 1 * 512 = 512 bytes
+ # Sector size (logical/physical): 512 bytes / 512 bytes
+ # I/O size (minimum/optimal): 512 bytes / 512 bytes
+ # Disk identifier: 0x00000000
+ #
+ # Device Boot Start End Blocks Id System
+ # sd-master-1GiB.img1 * 63 144584 72261 c W95 FAT32 (LBA)
+ # sd-master-1GiB.img2 144585 1959929 907672+ 83 Linux
+
+
+ BYTES_PER_SECTOR="$(/sbin/fdisk -l -u sd.img | grep Units | awk '{print $9}')"
+ VFAT_SECTOR_OFFSET="$(/sbin/fdisk -l -u sd.img | grep img1 | awk '{print $3}')"
+ EXT3_SECTOR_OFFSET="$(/sbin/fdisk -l -u sd.img | grep img2 | awk '{print $2}')"
+
+ LOOP_DEV="/dev/loop1"
+ LOOP_DEV_FS="/dev/loop2"
+ umount ${LOOP_DEV} || true
+ umount ${LOOP_DEV_FS} || true
+ /sbin/losetup -d ${LOOP_DEV} || true
+ /sbin/losetup -d ${LOOP_DEV_FS} || true
+
+ echo ""
+
+ # VFAT
+ echo "/sbin/losetup -v -o $(expr ${BYTES_PER_SECTOR} "*" ${VFAT_SECTOR_OFFSET}) ${LOOP_DEV} ${WORKDIR}/sd.img"
+ /sbin/losetup -v -o $(expr ${BYTES_PER_SECTOR} "*" ${VFAT_SECTOR_OFFSET}) ${LOOP_DEV} ${WORKDIR}/sd.img
+
+ # EXT3
+ echo "/sbin/losetup -v -o $(expr ${BYTES_PER_SECTOR} "*" ${EXT3_SECTOR_OFFSET}) ${LOOP_DEV_FS} ${WORKDIR}/sd.img"
+ /sbin/losetup -v -o $(expr ${BYTES_PER_SECTOR} "*" ${EXT3_SECTOR_OFFSET}) ${LOOP_DEV_FS} ${WORKDIR}/sd.img
+ echo "/sbin/mkfs.ext3 -L Narcissus-rootfs ${LOOP_DEV_FS}"
+ /sbin/mkfs.ext3 -L Narcissus-rootfs ${LOOP_DEV_FS}
+
+ echo ""
+
+ echo "mount ${LOOP_DEV}"
+ mount ${LOOP_DEV}
+
+ echo "mount ${LOOP_DEV_FS}"
+ mount ${LOOP_DEV_FS}
+
+ # report mount status to log
+ mount | grep loop
+
+ if [ -e ${IMAGE_ROOTFS}/boot/MLO ] ; then
+ cp -v ${IMAGE_ROOTFS}/boot/MLO /mnt/narcissus/sd_image1/MLO
+ fi
+
+ echo "Remounting ${LOOP_DEV}"
+ umount ${LOOP_DEV}
+ mount ${LOOP_DEV}
+
+ echo "Copying file system:"
+ cp -r ${IMAGE_ROOTFS}/* /mnt/narcissus/sd_images2/ || true
+
+ echo "Copying bootloaders into the boot partition"
+ cp -v /mnt/narcissus/sd_image2/boot/u-boot-*.bin /mnt/narcissus/sd_image1/u-boot.bin || true
+ cp -v /mnt/narcissus/sd_image2/boot/uImage-2.6* /mnt/narcissus/sd_image1/uImage || true
+ cp -v /mnt/narcissus/sd_image2/boot/user.txt /mnt/narcissus/sd_image1/ || true
+ cp -v /mnt/narcissus/sd_image2/boot/uEnv.txt /mnt/narcissus/sd_image1/ || true
+
+ if [ ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.ubi ] ; then
+ echo "Copying UBIFS image to file system:"
+ cp ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.ubi /mnt/narcissus/sd_image2/boot/fs.ubi
+ fi
+
+ touch /mnt/narcissus/sd_image2/narcissus-was-here
+ echo "Remounting ${LOOP_DEV_FS}"
+ umount ${LOOP_DEV_FS}
+ mount ${LOOP_DEV_FS}
+
+ echo "files in ext3 partition:" $(du -hs /mnt/narcissus/sd_image2/* | sed s:/mnt/narcissus/sd_image2/::g)
+
+ echo "umount ${LOOP_DEV}"
+ umount ${LOOP_DEV}
+ echo "umount ${LOOP_DEV_FS}"
+ umount ${LOOP_DEV_FS}
+
+ /sbin/losetup -d ${LOOP_DEV}
+ /sbin/losetup -d ${LOOP_DEV_FS}
+
+ gzip -c sd.img > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}-${MACHINE}-sd-$sdsize.img.gz
+ fi
+ done
+}
+
EXTRA_IMAGECMD = ""
EXTRA_IMAGECMD_jffs2 ?= "--pad --little-endian --eraseblock=0x40000"
# Change these if you want default genext2fs behavior (i.e. create minimal inode number)
--
1.7.0.4
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