| inherit image_types |
| inherit linux-raspberrypi-base |
| |
| # |
| # Create an image that can by written onto a SD card using dd. |
| # |
| # The disk layout used is: |
| # |
| # 0 -> IMAGE_ROOTFS_ALIGNMENT - reserved for other data |
| # IMAGE_ROOTFS_ALIGNMENT -> BOOT_SPACE - bootloader and kernel |
| # BOOT_SPACE -> SDIMG_SIZE - rootfs |
| # |
| |
| # Default Free space = 1.3x |
| # Use IMAGE_OVERHEAD_FACTOR to add more space |
| # <---------> |
| # 4MiB 40MiB SDIMG_ROOTFS |
| # <-----------------------> <----------> <----------------------> |
| # ------------------------ ------------ ------------------------ |
| # | IMAGE_ROOTFS_ALIGNMENT | BOOT_SPACE | ROOTFS_SIZE | |
| # ------------------------ ------------ ------------------------ |
| # ^ ^ ^ ^ |
| # | | | | |
| # 0 4MiB 4MiB + 40MiB 4MiB + 40Mib + SDIMG_ROOTFS |
| |
| # This image depends on the rootfs image |
| IMAGE_TYPEDEP_rpi-sdimg = "${SDIMG_ROOTFS_TYPE}" |
| |
| # Set kernel and boot loader |
| IMAGE_BOOTLOADER ?= "bcm2835-bootfiles" |
| |
| # Set initramfs extension |
| KERNEL_INITRAMFS ?= "" |
| |
| # Kernel image name |
| SDIMG_KERNELIMAGE_raspberrypi ?= "kernel.img" |
| SDIMG_KERNELIMAGE_raspberrypi2 ?= "kernel7.img" |
| SDIMG_KERNELIMAGE_raspberrypi3-64 ?= "kernel8.img" |
| |
| # Boot partition volume id |
| BOOTDD_VOLUME_ID ?= "${MACHINE}" |
| |
| # Boot partition size [in KiB] (will be rounded up to IMAGE_ROOTFS_ALIGNMENT) |
| BOOT_SPACE ?= "40960" |
| |
| # Set alignment to 4MB [in KiB] |
| IMAGE_ROOTFS_ALIGNMENT = "4096" |
| |
| # Use an uncompressed ext3 by default as rootfs |
| SDIMG_ROOTFS_TYPE ?= "ext3" |
| SDIMG_ROOTFS = "${IMGDEPLOYDIR}/${IMAGE_NAME}.rootfs.${SDIMG_ROOTFS_TYPE}" |
| |
| IMAGE_DEPENDS_rpi-sdimg = " \ |
| parted-native \ |
| mtools-native \ |
| dosfstools-native \ |
| virtual/kernel:do_deploy \ |
| ${IMAGE_BOOTLOADER} \ |
| ${@bb.utils.contains('KERNEL_IMAGETYPE', 'uImage', 'u-boot', '',d)} \ |
| " |
| |
| # SD card image name |
| SDIMG = "${IMGDEPLOYDIR}/${IMAGE_NAME}.rootfs.rpi-sdimg" |
| |
| # Compression method to apply to SDIMG after it has been created. Supported |
| # compression formats are "gzip", "bzip2" or "xz". The original .rpi-sdimg file |
| # is kept and a new compressed file is created if one of these compression |
| # formats is chosen. If SDIMG_COMPRESSION is set to any other value it is |
| # silently ignored. |
| #SDIMG_COMPRESSION ?= "" |
| |
| # Additional files and/or directories to be copied into the vfat partition from the IMAGE_ROOTFS. |
| FATPAYLOAD ?= "" |
| |
| # SD card vfat partition image name |
| SDIMG_VFAT = "${IMAGE_NAME}.vfat" |
| SDIMG_LINK_VFAT = "${IMGDEPLOYDIR}/${IMAGE_LINK_NAME}.vfat" |
| |
| IMAGE_CMD_rpi-sdimg () { |
| |
| # Align partitions |
| BOOT_SPACE_ALIGNED=$(expr ${BOOT_SPACE} + ${IMAGE_ROOTFS_ALIGNMENT} - 1) |
| BOOT_SPACE_ALIGNED=$(expr ${BOOT_SPACE_ALIGNED} - ${BOOT_SPACE_ALIGNED} % ${IMAGE_ROOTFS_ALIGNMENT}) |
| SDIMG_SIZE=$(expr ${IMAGE_ROOTFS_ALIGNMENT} + ${BOOT_SPACE_ALIGNED} + $ROOTFS_SIZE) |
| |
| echo "Creating filesystem with Boot partition ${BOOT_SPACE_ALIGNED} KiB and RootFS $ROOTFS_SIZE KiB" |
| |
| # Check if we are building with device tree support |
| DTS="${@get_dts(d)}" |
| |
| # Initialize sdcard image file |
| dd if=/dev/zero of=${SDIMG} bs=1024 count=0 seek=${SDIMG_SIZE} |
| |
| # Create partition table |
| parted -s ${SDIMG} mklabel msdos |
| # Create boot partition and mark it as bootable |
| parted -s ${SDIMG} unit KiB mkpart primary fat32 ${IMAGE_ROOTFS_ALIGNMENT} $(expr ${BOOT_SPACE_ALIGNED} \+ ${IMAGE_ROOTFS_ALIGNMENT}) |
| parted -s ${SDIMG} set 1 boot on |
| # Create rootfs partition to the end of disk |
| parted -s ${SDIMG} -- unit KiB mkpart primary ext2 $(expr ${BOOT_SPACE_ALIGNED} \+ ${IMAGE_ROOTFS_ALIGNMENT}) -1s |
| parted ${SDIMG} print |
| |
| # Create a vfat image with boot files |
| BOOT_BLOCKS=$(LC_ALL=C parted -s ${SDIMG} unit b print | awk '/ 1 / { print substr($4, 1, length($4 -1)) / 512 /2 }') |
| rm -f ${WORKDIR}/boot.img |
| mkfs.vfat -n "${BOOTDD_VOLUME_ID}" -S 512 -C ${WORKDIR}/boot.img $BOOT_BLOCKS |
| mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/bcm2835-bootfiles/* ::/ |
| if test -n "${DTS}"; then |
| # 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 |
| DT_OVERLAYS="${@split_overlays(d, 0)}" |
| DT_ROOT="${@split_overlays(d, 1)}" |
| |
| # Copy board device trees to root folder |
| for DTB in $DT_ROOT; do |
| DTB_BASE_NAME=`basename ${DTB} .dtb` |
| |
| mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-${DTB_BASE_NAME}.dtb ::${DTB_BASE_NAME}.dtb |
| done |
| |
| # Copy device tree overlays to dedicated folder |
| mmd -i ${WORKDIR}/boot.img overlays |
| for DTB in $DT_OVERLAYS; do |
| DTB_EXT=${DTB##*.} |
| DTB_BASE_NAME=`basename ${DTB} ."${DTB_EXT}"` |
| |
| mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-${DTB_BASE_NAME}.${DTB_EXT} ::overlays/${DTB_BASE_NAME}.${DTB_EXT} |
| done |
| fi |
| case "${KERNEL_IMAGETYPE}" in |
| "uImage") |
| mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/u-boot.bin ::${SDIMG_KERNELIMAGE} |
| mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}${KERNEL_INITRAMFS}-${MACHINE}.bin ::uImage |
| mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/boot.scr ::boot.scr |
| ;; |
| *) |
| mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}${KERNEL_INITRAMFS}-${MACHINE}.bin ::${SDIMG_KERNELIMAGE} |
| ;; |
| esac |
| |
| if [ -n ${FATPAYLOAD} ] ; then |
| echo "Copying payload into VFAT" |
| for entry in ${FATPAYLOAD} ; do |
| # add the || true to stop aborting on vfat issues like not supporting .~lock files |
| mcopy -i ${WORKDIR}/boot.img -s -v ${IMAGE_ROOTFS}$entry :: || true |
| done |
| fi |
| |
| # Add stamp file |
| echo "${IMAGE_NAME}" > ${WORKDIR}/image-version-info |
| mcopy -i ${WORKDIR}/boot.img -v ${WORKDIR}/image-version-info :: |
| |
| # Deploy vfat partition (for u-boot case only) |
| case "${KERNEL_IMAGETYPE}" in |
| "uImage") |
| cp ${WORKDIR}/boot.img ${IMGDEPLOYDIR}/${SDIMG_VFAT} |
| ln -sf ${SDIMG_VFAT} ${SDIMG_LINK_VFAT} |
| ;; |
| *) |
| ;; |
| esac |
| |
| # Burn Partitions |
| dd if=${WORKDIR}/boot.img of=${SDIMG} conv=notrunc seek=1 bs=$(expr ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync |
| # If SDIMG_ROOTFS_TYPE is a .xz file use xzcat |
| if echo "${SDIMG_ROOTFS_TYPE}" | egrep -q "*\.xz" |
| then |
| xzcat ${SDIMG_ROOTFS} | dd of=${SDIMG} conv=notrunc seek=1 bs=$(expr 1024 \* ${BOOT_SPACE_ALIGNED} + ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync |
| else |
| dd if=${SDIMG_ROOTFS} of=${SDIMG} conv=notrunc seek=1 bs=$(expr 1024 \* ${BOOT_SPACE_ALIGNED} + ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync |
| fi |
| |
| # Optionally apply compression |
| case "${SDIMG_COMPRESSION}" in |
| "gzip") |
| gzip -k9 "${SDIMG}" |
| ;; |
| "bzip2") |
| bzip2 -k9 "${SDIMG}" |
| ;; |
| "xz") |
| xz -k "${SDIMG}" |
| ;; |
| esac |
| } |
| |
| ROOTFS_POSTPROCESS_COMMAND += " rpi_generate_sysctl_config ; " |
| |
| rpi_generate_sysctl_config() { |
| # systemd sysctl config |
| test -d ${IMAGE_ROOTFS}${sysconfdir}/sysctl.d && \ |
| echo "vm.min_free_kbytes = 8192" > ${IMAGE_ROOTFS}${sysconfdir}/sysctl.d/rpi-vm.conf |
| |
| # sysv sysctl config |
| IMAGE_SYSCTL_CONF="${IMAGE_ROOTFS}${sysconfdir}/sysctl.conf" |
| test -e ${IMAGE_ROOTFS}${sysconfdir}/sysctl.conf && \ |
| sed -e "/vm.min_free_kbytes/d" -i ${IMAGE_SYSCTL_CONF} |
| echo "" >> ${IMAGE_SYSCTL_CONF} && echo "vm.min_free_kbytes = 8192" >> ${IMAGE_SYSCTL_CONF} |
| } |