1 files changed, 73 insertions, 0 deletions
diff --git a/examples/yocto/meta-mini/classes/image_sdcard.bbclass b/examples/yocto/meta-mini/classes/image_sdcard.bbclass
new file mode 100644
index 0000000..f70c4e5
--- /dev/null
+++ b/examples/yocto/meta-mini/classes/image_sdcard.bbclass
@@ -0,0 +1,73 @@
+inherit image_types
+
+IMAGE_BOOTLOADER ?= "u-boot"
+
+# Handle u-boot suffixes
+UBOOT_SUFFIX ?= "bin"
+UBOOT_PADDING ?= "0"
+UBOOT_SUFFIX_SDCARD ?= "${UBOOT_SUFFIX}"
+
+# Linux bootstream
+IMAGE_DEPENDS_linux.sb = "virtual/kernel:do_deploy"
+
+# Boot partition volume id
+BOOTDD_VOLUME_ID ?= "Boot ${MACHINE}"
+# Boot partition size [in KiB]
+BOOT_SPACE ?= "8192"
+# Set alignment to 4MB [in KiB]
+IMAGE_ROOTFS_ALIGNMENT = "4096"
+
+IMAGE_DEPENDS_sdcard = "parted-native:do_populate_sysroot \
+                        dosfstools-native:do_populate_sysroot \
+                        mtools-native:do_populate_sysroot \
+                        virtual/kernel:do_deploy \
+                        ${@d.getVar('IMAGE_BOOTLOADER', True) and d.getVar('IMAGE_BOOTLOADER', True) + ':do_deploy' or ''}"
+
+SDCARD = "${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.sdcard"
+
+SDCARD_GENERATION_COMMAND_ti33x = "generate_ti_sdcard"
+
+generate_ti_sdcard () {
+	parted -s ${SDCARD} mklabel msdos
+	parted -s ${SDCARD} unit KiB mkpart primary fat32 ${IMAGE_ROOTFS_ALIGNMENT} $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED})
+	parted -s ${SDCARD} unit KiB mkpart primary $(expr  ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED}) $(expr ${IMAGE_ROOTFS_ALIGNMENT} \+ ${BOOT_SPACE_ALIGNED} \+ $ROOTFS_SIZE)
+	parted -s ${SDCARD} set 1 boot on
+	parted ${SDCARD} print
+
+	BOOT_BLOCKS=$(LC_ALL=C parted -s ${SDCARD} unit b print \
+	                  | awk '/ 1 / { print substr($4, 1, length($4 -1)) / 1024 }')
+	mkfs.vfat -n "${BOOTDD_VOLUME_ID}" -S 512 -C ${WORKDIR}/boot.img $BOOT_BLOCKS
+
+	# copy files to /boot
+	mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/MLO-${MACHINE} ::/MLO
+	mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.img ::/u-boot.img
+	mmd -i ${WORKDIR}/boot.img  ::/boot
+	mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-${MACHINE}.bin ::/boot/${KERNEL_IMAGETYPE}
+	mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGETYPE}-am335x-boneblack.dtb ::/boot/am335x-boneblack.dtb
+	mcopy -i ${WORKDIR}/boot.img -s ${DEPLOY_DIR_IMAGE}/uEnv.txt ::/uEnv.txt
+
+	# Burn Partition
+	dd if=${WORKDIR}/boot.img of=${SDCARD} conv=notrunc seek=1 bs=$(expr ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync
+	dd if=${SDCARD_ROOTFS} of=${SDCARD} conv=notrunc seek=1 bs=$(expr ${BOOT_SPACE_ALIGNED} \* 1024 + ${IMAGE_ROOTFS_ALIGNMENT} \* 1024) && sync && sync
+}
+
+IMAGE_CMD_sdcard () {
+	if [ -z "${SDCARD_ROOTFS}" ]; then
+		bberror "SDCARD_ROOTFS is undefined. To use sdcard image from Freescale's BSP it needs to be defined."
+		exit 1
+	fi
+
+	# Align boot partition and calculate total SD card image size
+	BOOT_SPACE_ALIGNED=$(expr ${BOOT_SPACE} + ${IMAGE_ROOTFS_ALIGNMENT} - 1)
+	BOOT_SPACE_ALIGNED=$(expr ${BOOT_SPACE_ALIGNED} - ${BOOT_SPACE_ALIGNED} % ${IMAGE_ROOTFS_ALIGNMENT})
+	SDCARD_SIZE=$(expr ${IMAGE_ROOTFS_ALIGNMENT} + ${BOOT_SPACE_ALIGNED} + $ROOTFS_SIZE + ${IMAGE_ROOTFS_ALIGNMENT})
+
+	# Initialize a sparse file
+	dd if=/dev/zero of=${SDCARD} bs=1 count=0 seek=$(expr 1024 \* ${SDCARD_SIZE})
+
+	${SDCARD_GENERATION_COMMAND}
+}
+
+# The sdcard requires the rootfs filesystem to be built before using
+# it so we must make this dependency explicit.
+IMAGE_TYPEDEP_sdcard = "${@d.getVar('SDCARD_ROOTFS', 1).split('.')[-1]}"