37e4e18f4a
The timestamp in the rootfs partition image filename may not match the current timestamp if the do_image_rpi_sdimg step is repeated without repeating the previous do_image_ext3 (or similar) step. Signed-off-by: Paul Barker <pbarker@toganlabs.com>
202 lines
7.7 KiB
Plaintext
202 lines
7.7 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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#
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# The disk layout used is:
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#
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# 0 -> IMAGE_ROOTFS_ALIGNMENT - reserved for other data
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# IMAGE_ROOTFS_ALIGNMENT -> BOOT_SPACE - bootloader and kernel
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# BOOT_SPACE -> SDIMG_SIZE - rootfs
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#
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# Default Free space = 1.3x
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# Use IMAGE_OVERHEAD_FACTOR to add more space
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# <--------->
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# 4MiB 40MiB SDIMG_ROOTFS
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# <-----------------------> <----------> <---------------------->
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# ------------------------ ------------ ------------------------
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# | IMAGE_ROOTFS_ALIGNMENT | BOOT_SPACE | ROOTFS_SIZE |
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# ------------------------ ------------ ------------------------
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# ^ ^ ^ ^
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# | | | |
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# 0 4MiB 4MiB + 40MiB 4MiB + 40Mib + SDIMG_ROOTFS
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# This image depends on the rootfs image
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IMAGE_TYPEDEP_rpi-sdimg = "${SDIMG_ROOTFS_TYPE}"
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# Set kernel and boot loader
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IMAGE_BOOTLOADER ?= "bcm2835-bootfiles"
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# Set initramfs extension
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KERNEL_INITRAMFS ?= ""
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# Kernel image name
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SDIMG_KERNELIMAGE_raspberrypi ?= "kernel.img"
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SDIMG_KERNELIMAGE_raspberrypi2 ?= "kernel7.img"
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SDIMG_KERNELIMAGE_raspberrypi3-64 ?= "kernel8.img"
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# Boot partition volume id
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BOOTDD_VOLUME_ID ?= "${MACHINE}"
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# Boot partition size [in KiB] (will be rounded up to IMAGE_ROOTFS_ALIGNMENT)
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BOOT_SPACE ?= "40960"
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# Set alignment to 4MB [in KiB]
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IMAGE_ROOTFS_ALIGNMENT = "4096"
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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 = "${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.${SDIMG_ROOTFS_TYPE}"
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do_image_rpi_sdimg[depends] = " \
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parted-native:do_populate_sysroot \
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mtools-native:do_populate_sysroot \
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dosfstools-native:do_populate_sysroot \
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virtual/kernel:do_deploy \
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${IMAGE_BOOTLOADER}:do_deploy \
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${@bb.utils.contains('RPI_USE_U_BOOT', '1', 'u-boot:do_deploy', '',d)} \
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"
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# SD card image name
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SDIMG = "${IMGDEPLOYDIR}/${IMAGE_NAME}.rootfs.rpi-sdimg"
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# Compression method to apply to SDIMG after it has been created. Supported
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# compression formats are "gzip", "bzip2" or "xz". The original .rpi-sdimg file
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# is kept and a new compressed file is created if one of these compression
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# formats is chosen. If SDIMG_COMPRESSION is set to any other value it is
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# silently ignored.
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#SDIMG_COMPRESSION ?= ""
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# Additional files and/or directories to be copied into the vfat partition from the IMAGE_ROOTFS.
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FATPAYLOAD ?= ""
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# SD card vfat partition image name
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SDIMG_VFAT = "${IMAGE_NAME}.vfat"
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SDIMG_LINK_VFAT = "${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.vfat"
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def split_overlays(d, out, ver=None):
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dts = d.getVar("KERNEL_DEVICETREE")
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if out:
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overlays = oe.utils.str_filter_out('\S+\-overlay\.dtb$', dts, d)
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overlays = oe.utils.str_filter_out('\S+\.dtbo$', overlays, d)
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else:
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overlays = oe.utils.str_filter('\S+\-overlay\.dtb$', dts, d) + \
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" " + oe.utils.str_filter('\S+\.dtbo$', dts, d)
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return overlays
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IMAGE_CMD_rpi-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)
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echo "Creating filesystem with Boot partition ${BOOT_SPACE_ALIGNED} KiB and RootFS $ROOTFS_SIZE KiB"
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# Check if we are building with device tree support
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DTS="${KERNEL_DEVICETREE}"
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# Initialize sdcard image file
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dd if=/dev/zero of=${SDIMG} bs=1024 count=0 seek=${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 to the end of disk
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parted -s ${SDIMG} -- unit KiB mkpart primary ext2 $(expr ${BOOT_SPACE_ALIGNED} \+ ${IMAGE_ROOTFS_ALIGNMENT}) -1s
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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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rm -f ${WORKDIR}/boot.img
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mkfs.vfat -n "${BOOTDD_VOLUME_ID}" -S 512 -C ${WORKDIR}/boot.img $BOOT_BLOCKS
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/bcm2835-bootfiles/* ::/
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if test -n "${DTS}"; then
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# Device Tree Overlays are assumed to be suffixed by '-overlay.dtb' (4.1.x) or by '.dtbo' (4.4.9+) string and will be put in a dedicated folder
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DT_OVERLAYS="${@split_overlays(d, 0)}"
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DT_ROOT="${@split_overlays(d, 1)}"
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# Copy board device trees to root folder
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for DTB in $DT_ROOT; do
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DTB_BASE_NAME=`basename ${DTB} .dtb`
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-${DTB_BASE_NAME}.dtb ::${DTB_BASE_NAME}.dtb
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done
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# Copy device tree overlays to dedicated folder
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mmd -i ${WORKDIR}/boot.img overlays
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for DTB in $DT_OVERLAYS; do
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DTB_EXT=${DTB##*.}
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DTB_BASE_NAME=`basename ${DTB} ."${DTB_EXT}"`
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-${DTB_BASE_NAME}.${DTB_EXT} ::overlays/${DTB_BASE_NAME}.${DTB_EXT}
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done
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fi
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if [ "${RPI_USE_U_BOOT}" = "1" ]; then
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/u-boot.bin ::${SDIMG_KERNELIMAGE}
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}${KERNEL_INITRAMFS}-${MACHINE}.bin ::${KERNEL_IMAGETYPE}
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/boot.scr ::boot.scr
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else
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}${KERNEL_INITRAMFS}-${MACHINE}.bin ::${SDIMG_KERNELIMAGE}
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fi
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if [ -n ${FATPAYLOAD} ] ; then
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echo "Copying payload into VFAT"
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for entry in ${FATPAYLOAD} ; do
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# add the || true to stop aborting on vfat issues like not supporting .~lock files
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mcopy -i ${WORKDIR}/boot.img -s -v ${IMAGE_ROOTFS}$entry :: || true
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done
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fi
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# Add stamp file
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echo "${IMAGE_NAME}" > ${WORKDIR}/image-version-info
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mcopy -i ${WORKDIR}/boot.img -v ${WORKDIR}/image-version-info ::
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# Deploy vfat partition (for u-boot case only)
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if [ "${RPI_USE_U_BOOT}" = "1" ]; then
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cp ${WORKDIR}/boot.img ${IMGDEPLOYDIR}/${SDIMG_VFAT}
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ln -sf ${SDIMG_VFAT} ${SDIMG_LINK_VFAT}
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fi
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# Burn Partitions
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dd if=${WORKDIR}/boot.img of=${SDIMG} conv=notrunc seek=1 bs=$(expr ${IMAGE_ROOTFS_ALIGNMENT} \* 1024)
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# If SDIMG_ROOTFS_TYPE is a .xz file use xzcat
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if echo "${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} + ${IMAGE_ROOTFS_ALIGNMENT} \* 1024)
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else
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dd if=${SDIMG_ROOTFS} of=${SDIMG} conv=notrunc seek=1 bs=$(expr 1024 \* ${BOOT_SPACE_ALIGNED} + ${IMAGE_ROOTFS_ALIGNMENT} \* 1024)
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fi
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# Optionally apply compression
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case "${SDIMG_COMPRESSION}" in
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"gzip")
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gzip -k9 "${SDIMG}"
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;;
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"bzip2")
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bzip2 -k9 "${SDIMG}"
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;;
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"xz")
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xz -k "${SDIMG}"
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;;
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esac
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}
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ROOTFS_POSTPROCESS_COMMAND += " rpi_generate_sysctl_config ; "
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rpi_generate_sysctl_config() {
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# systemd sysctl config
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test -d ${IMAGE_ROOTFS}${sysconfdir}/sysctl.d && \
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echo "vm.min_free_kbytes = 8192" > ${IMAGE_ROOTFS}${sysconfdir}/sysctl.d/rpi-vm.conf
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# sysv sysctl config
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IMAGE_SYSCTL_CONF="${IMAGE_ROOTFS}${sysconfdir}/sysctl.conf"
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test -e ${IMAGE_ROOTFS}${sysconfdir}/sysctl.conf && \
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sed -e "/vm.min_free_kbytes/d" -i ${IMAGE_SYSCTL_CONF}
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echo "" >> ${IMAGE_SYSCTL_CONF} && echo "vm.min_free_kbytes = 8192" >> ${IMAGE_SYSCTL_CONF}
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}
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