mirror of
https://github.com/linux-sunxi/meta-sunxi.git
synced 2024-07-03 12:39:48 +02:00
9a2692fcde
Without this explicit dependency,
a race condition would be present between the generation of the sd image
and the generation of the ext3 file,
which leads to corrupt SD images in some circumstances.
Based on meta-raspberrypi commit a760ea5fa2
94 lines
3.5 KiB
Plaintext
94 lines
3.5 KiB
Plaintext
inherit image_types
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#
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# Create an image that can by written onto a SD card using dd.
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# Originally written for rasberrypi adapt for the needs of allwinner sunxi based boards
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#
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# The disk layout used is:
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#
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# 0 -> 8*1024 - reserverd
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# 8*1024 -> 32*1024 -
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# 32*1024 -> 2048*1024 -
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# 2048*1024 -> BOOT_SPACE - bootloader and kernel
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#
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#
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# This image depends on ext3 image
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IMAGE_TYPEDEP_sunxi-sdimg = "ext3"
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# Boot partition volume id
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BOOTDD_VOLUME_ID ?= "${MACHINE}"
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# Boot partition size [in KiB]
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BOOT_SPACE ?= "20480"
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# First partition begin at sector 2048 : 2048*1024 = 2097152
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IMAGE_ROOTFS_ALIGNMENT = "2048"
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# Use an uncompressed ext3 by default as rootfs
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SDIMG_ROOTFS_TYPE ?= "ext3"
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SDIMG_ROOTFS = "${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.${SDIMG_ROOTFS_TYPE}"
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IMAGE_DEPENDS_sunxi-sdimg += " \
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parted-native \
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mtools-native \
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dosfstools-native \
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virtual/kernel \
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virtual/bootloader \
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sunxi-board-fex \
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"
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rootfs[depends] += "sunxi-board-fex:do_deploy"
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# SD card image name
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SDIMG = "${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.sunxi-sdimg"
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IMAGEDATESTAMP = "${@time.strftime('%Y.%m.%d',time.gmtime())}"
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IMAGE_CMD_sunxi-sdimg () {
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# Align partitions
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BOOT_SPACE_ALIGNED=$(expr ${BOOT_SPACE} + ${IMAGE_ROOTFS_ALIGNMENT} - 1)
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BOOT_SPACE_ALIGNED=$(expr ${BOOT_SPACE_ALIGNED} - ${BOOT_SPACE_ALIGNED} % ${IMAGE_ROOTFS_ALIGNMENT})
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SDIMG_SIZE=$(expr ${IMAGE_ROOTFS_ALIGNMENT} + ${BOOT_SPACE_ALIGNED} + $ROOTFS_SIZE + ${IMAGE_ROOTFS_ALIGNMENT})
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# Initialize sdcard image file
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dd if=/dev/zero of=${SDIMG} bs=1 count=0 seek=$(expr 1024 \* ${SDIMG_SIZE})
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# Create partition table
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parted -s ${SDIMG} mklabel msdos
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# Create boot partition and mark it as bootable
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parted -s ${SDIMG} unit KiB mkpart primary fat32 ${IMAGE_ROOTFS_ALIGNMENT} $(expr ${BOOT_SPACE_ALIGNED} \+ ${IMAGE_ROOTFS_ALIGNMENT})
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parted -s ${SDIMG} set 1 boot on
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# Create rootfs partition
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parted -s ${SDIMG} unit KiB mkpart primary ext2 $(expr ${BOOT_SPACE_ALIGNED} \+ ${IMAGE_ROOTFS_ALIGNMENT}) $(expr ${BOOT_SPACE_ALIGNED} \+ ${IMAGE_ROOTFS_ALIGNMENT} \+ ${ROOTFS_SIZE})
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parted ${SDIMG} print
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# Create a vfat image with boot files
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BOOT_BLOCKS=$(LC_ALL=C parted -s ${SDIMG} unit b print | awk '/ 1 / { print substr($4, 1, length($4 -1)) / 512 /2 }')
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mkfs.vfat -n "${BOOTDD_VOLUME_ID}" -S 512 -C ${WORKDIR}/boot.img $BOOT_BLOCKS
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mcopy -i ${WORKDIR}/boot.img -s ${STAGING_DIR_HOST}/usr/src/kernel/${KERNEL_IMAGETYPE} ::uImage
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if [ -e "${DEPLOY_DIR_IMAGE}/fex.bin" ]
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then
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/fex.bin ::script.bin
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fi
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# Add stamp file
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echo "${IMAGE_NAME}-${IMAGEDATESTAMP}" > ${WORKDIR}/image-version-info
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mcopy -i ${WORKDIR}/boot.img -v ${WORKDIR}//image-version-info ::
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# Burn Partitions
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dd if=${WORKDIR}/boot.img of=${SDIMG} conv=notrunc seek=1 bs=$(expr ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync
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# If SDIMG_ROOTFS_TYPE is a .xz file use xzcat
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if echo "${SDIMG_ROOTFS_TYPE}" | egrep -q "*\.xz"
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then
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xzcat ${SDIMG_ROOTFS} | dd of=${SDIMG} conv=notrunc seek=1 bs=$(expr 1024 \* ${BOOT_SPACE_ALIGNED} + ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync
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else
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dd if=${SDIMG_ROOTFS} of=${SDIMG} conv=notrunc seek=1 bs=$(expr 1024 \* ${BOOT_SPACE_ALIGNED} + ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync
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fi
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#write u-boot and spl at the beginint of sdcard in one shot
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dd if=${DEPLOY_DIR_IMAGE}/u-boot-sunxi-with-spl.bin of=${SDIMG} bs=1024 seek=8 conv=notrunc
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}
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