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86 lines
3.3 KiB
Plaintext
86 lines
3.3 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 a10 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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# Boot partition volume id
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BOOTDD_VOLUME_ID ?= "${MACHINE}"
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# Boot partition size [in KiB]
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BOOT_SPACE ?= "20480"
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# First partition begin at sector 2048 : 2048*1024 = 2097152
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IMAGE_ROOTFS_ALIGNMENT = "2048"
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# Use an uncompressed ext3 by default as rootfs
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SDIMG_ROOTFS_TYPE ?= "ext3"
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SDIMG_ROOTFS = "${IMAGE_NAME}.rootfs.${SDIMG_ROOTFS_TYPE}"
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IMAGE_DEPENDS_a10-sdimg = " \
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parted-native \
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mtools-native \
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dosfstools-native \
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virtual/kernel \
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virtual/bootloader \
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"
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# SD card image name
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SDIMG = "${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.a10-sdimg"
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IMAGEDATESTAMP = "${@time.strftime('%Y.%m.%d',time.gmtime())}"
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IMAGE_CMD_a10-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 ${DEPLOY_DIR_IMAGE}/u-boot.bin ::
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-${MACHINE}.bin ::uImage
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# Add stamp file
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echo "${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 ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync
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# If SDIMG_ROOTFS_TYPE is a .xz file use xzcat
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if [[ "$SDIMG_ROOTFS_TYPE" == *.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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