meta-digi: support generation of sdcard images for ccardimx28js
https://jira.digi.com/browse/DEL-197 Signed-off-by: Javier Viguera <javier.viguera@digi.com>
This commit is contained in:
Javier Viguera
parent
141a8f9d5f
commit
0a5aa1c24d
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@ -57,3 +57,88 @@ IMAGE_CMD_rootfs.initramfs() {
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fi
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}
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IMAGE_TYPEDEP_rootfs.initramfs = "cpio.gz"
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SDCARD_GENERATION_COMMAND_ccardimx28js = "generate_ccardimx28js_sdcard"
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#
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# Create an image that can by written onto a SD card using dd for use with ccardimx28js
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#
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# External variables needed:
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# ${SDCARD_ROOTFS} - the rootfs image to incorporate
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#
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# The disk layout used is:
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#
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# 1M -> IMAGE_ROOTFS_ALIGNMENT - u-boot bootstream
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# IMAGE_ROOTFS_ALIGNMENT -> BOOT_SPACE - kernel + devide tree blob (VFAT partition)
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# BOOT_SPACE -> SDIMG_SIZE - rootfs (EXT4 partition)
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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 8MiB SDIMG_ROOTFS 4MiB
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# <-----------------------> <-------------> <----------------------> <------------------------------>
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# ---------------------------------------- ------------------------ -------------------------------
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# | | | BOOT_SPACE | ROOTFS_SIZE | IMAGE_ROOTFS_ALIGNMENT |
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# ---------------------------------------- ------------------------ -------------------------------
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# ^ ^ ^ ^ ^ ^
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# | | | | | |
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# 0 1M 4M 4MiB + BOOTSPACE 4MiB + BOOTSPACE + SDIMG_ROOTFS 4MiB + BOOTSPACE + SDIMG_ROOTFS + 4MiB
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#
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generate_ccardimx28js_sdcard() {
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#
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# Bootstream header for u-boot at 1M offset
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#
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# The offset is coded in bytes 29-32 in little-endian. The
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# value to set is the offset in 512 bytes blocks + 1.
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#
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# For 1M offset we can calculate the bytes:
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#
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# printf '%08x' 2049 | grep -o .. | tac | tr -d '\n'
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#
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BS_HDR="\x33\x22\x11\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x08\x00\x00\x00\x00\x00\x00"
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# Use 'printf' command and not shell builtins because hexadecimal
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# format does not work well with 'dash' shell
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PRINTF="$(which printf)"
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parted -s ${SDCARD} mklabel msdos
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parted -s ${SDCARD} unit KiB mkpart primary 1024 ${IMAGE_ROOTFS_ALIGNMENT}
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parted -s ${SDCARD} unit KiB mkpart primary fat32 ${IMAGE_ROOTFS_ALIGNMENT} $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED})
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parted -s ${SDCARD} unit KiB mkpart primary $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED}) $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED} \+ $ROOTFS_SIZE)
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# Change partition type to 0x53 for mxs processor family
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echo -n S | dd of=${SDCARD} bs=1 count=1 seek=450 conv=notrunc
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${PRINTF} "${BS_HDR}" | dd of=${SDCARD} bs=512 seek=$(expr 1024 \* 2) conv=notrunc,sync
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dd if=${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.${UBOOT_SUFFIX} of=${SDCARD} bs=512 seek=$(expr 1024 \* 2 \+ 1) conv=notrunc,sync
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BOOT_BLOCKS=$(LC_ALL=C parted -s ${SDCARD} unit b print \
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| awk '/ 2 / { print substr($4, 1, length($4 -1)) / 1024 }')
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mkfs.vfat -n "${BOOTDD_VOLUME_ID}" -S 512 -C ${WORKDIR}/boot.img $BOOT_BLOCKS
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-${MACHINE}.bin ::/${KERNEL_IMAGETYPE}
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# Copy boot scripts
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for item in ${BOOT_SCRIPTS}; do
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src=`echo $item | awk -F':' '{ print $1 }'`
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dst=`echo $item | awk -F':' '{ print $2 }'`
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/$src ::/$dst
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done
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# Copy kernel image and dtb's
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if test -n "${KERNEL_DEVICETREE}"; then
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for DTS_FILE in ${KERNEL_DEVICETREE}; do
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DTS_BASE_NAME=`basename ${DTS_FILE} | awk -F "." '{print $1}'`
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if [ -e "${KERNEL_IMAGETYPE}-${DTS_BASE_NAME}.dtb" ]; then
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kernel_bin="`readlink ${KERNEL_IMAGETYPE}-${MACHINE}.bin`"
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kernel_bin_for_dtb="`readlink ${KERNEL_IMAGETYPE}-${DTS_BASE_NAME}.dtb | sed "s,$DTS_BASE_NAME,${MACHINE},g;s,\.dtb$,.bin,g"`"
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if [ $kernel_bin = $kernel_bin_for_dtb ]; then
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mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-${DTS_BASE_NAME}.dtb ::/${DTS_BASE_NAME}.dtb
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fi
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fi
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done
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fi
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# Burn partitions
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dd if=${WORKDIR}/boot.img of=${SDCARD} conv=notrunc seek=1 bs=$(expr ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync
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dd if=${SDCARD_ROOTFS} of=${SDCARD} conv=notrunc seek=1 bs=$(expr ${BOOT_SPACE_ALIGNED} \* 1024 + ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync
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}
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@ -16,6 +16,15 @@ SERIAL_CONSOLES_CHECK ?= "${SERIAL_CONSOLES}"
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# Bluetooth tty
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BT_TTY ?= "${@base_conditional('IS_KERNEL_2X', '1' , 'ttySP0', 'ttyAPP0', d)}"
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# U-Boot script to be copied to the SD image
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BOOT_SCRIPTS = "boot-sd.scr:boot.scr"
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# Rootfs image for rootfs partition in sdcard image
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SDCARD_ROOTFS ?= "${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ext4"
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# Build sdcard image for ccardimx28js
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IMAGE_FSTYPES += "sdcard"
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# FLASH parameters
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MKUBIFS_ARGS ?= "-m 2048 -e 126976 -c 2047"
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EXTRA_IMAGECMD_jffs2 ?= "-l -e 128 -n"
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@ -0,0 +1,16 @@
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#
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# U-Boot bootscript for SD images created by Yocto.
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#
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# Layout:
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# * U-Boot (raw copied)
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# * Boot partion (FAT) with kernel images and DTB
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# * Rootfs partion (EXT4)
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#
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# +--------------+----------------------+-------------------------+
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# | U-BOOT (RAW) | BOOT_PARTITION (FAT) | ROOTFS_PARTITION (EXT4) |
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# +--------------+----------------------+-------------------------+
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#
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setenv fdtimg imx28-ccardimx28js.dtb
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setenv kimg uimage
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setenv mmc_rpart /dev/mmcblk0p3
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dboot linux mmc 0:2
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@ -9,15 +9,19 @@ PROVIDES += "u-boot"
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LICENSE = "GPLv2+"
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LIC_FILES_CHKSUM = "file://COPYING;md5=1707d6db1d42237583f50183a5651ecb"
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PR = "r0"
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SRC_URI += "file://boot-sd.txt"
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S = "${WORKDIR}/git"
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DEPENDS_mxs += "elftosb-native"
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DEPENDS_ccardimx28 += "elftosb-native"
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do_compile_prepend() {
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${S}/tools/setlocalversion --save-scmversion ${S}
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}
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do_deploy_append() {
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mkimage -T script -n bootscript -C none -d ${WORKDIR}/boot-sd.txt ${DEPLOYDIR}/boot-sd.scr
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}
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PACKAGE_ARCH = "${MACHINE_ARCH}"
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COMPATIBLE_MACHINE = "(mxs)"
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COMPATIBLE_MACHINE = "(ccardimx28)"
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