meta-ti/meta-ti-bsp/classes/kernel-fitimage-ti-u-boot.bbclass

inherit ti-secdev

# The TI u-boot requires that the kernel image is signed.  To not overload the
# entire kernel-fitimage.bbclass from oe-core, we just overwrite one function
# and do the signing in there.

#
# Assemble fitImage
#
# $1 ... .its filename
# $2 ... fitImage name
# $3 ... include ramdisk
fitimage_assemble() {
	kernelcount=1
	dtbcount=""
	DTBS=""
	ramdiskcount=$3
	setupcount=""
	bootscr_id=""
	rm -f $1 arch/${ARCH}/boot/$2

	if [ -n "${UBOOT_SIGN_IMG_KEYNAME}" -a "${UBOOT_SIGN_KEYNAME}" = "${UBOOT_SIGN_IMG_KEYNAME}" ]; then
		bbfatal "Keys used to sign images and configuration nodes must be different."
	fi

	fitimage_emit_fit_header $1

	#
	# Step 1: Prepare a kernel image section.
	#
	fitimage_emit_section_maint $1 imagestart

	uboot_prep_kimage
	fitimage_ti_secure linux.bin linux.bin.sec
	fitimage_emit_section_kernel $1 $kernelcount linux.bin.sec "$linux_comp"

	#
	# Step 2: Prepare a DTB image section
	#

	if [ -n "${KERNEL_DEVICETREE}" ]; then
		dtbcount=1
		for DTB in ${KERNEL_DEVICETREE}; do
			if echo $DTB | grep -q '/dts/'; then
				bbwarn "$DTB contains the full path to the the dts file, but only the dtb name should be used."
				DTB=`basename $DTB | sed 's,\.dts$,.dtb,g'`
			fi

			# Skip ${DTB} if it's also provided in ${EXTERNAL_KERNEL_DEVICETREE}
			if [ -n "${EXTERNAL_KERNEL_DEVICETREE}" ] && [ -s ${EXTERNAL_KERNEL_DEVICETREE}/${DTB} ]; then
				continue
			fi

			DTB_PATH="arch/${ARCH}/boot/dts/$DTB"
			if [ ! -e "$DTB_PATH" ]; then
				DTB_PATH="arch/${ARCH}/boot/$DTB"
			fi

			DTB=$(echo "$DTB" | tr '/' '_')

			# Skip DTB if we've picked it up previously
			echo "$DTBS" | tr ' ' '\n' | grep -xq "$DTB" && continue

			fitimage_ti_secure ${DTB_PATH} ${DTB_PATH}.sec

            DTBS="$DTBS $DTB"
			fitimage_emit_section_dtb $1 $DTB ${DTB_PATH}.sec
		done
	fi

	if [ -n "${EXTERNAL_KERNEL_DEVICETREE}" ]; then
		dtbcount=1
		for DTB in $(find "${EXTERNAL_KERNEL_DEVICETREE}" -name '*.dtb' -printf '%P\n' | sort) \
		$(find "${EXTERNAL_KERNEL_DEVICETREE}" -name '*.dtbo' -printf '%P\n' | sort); do
			DTB=$(echo "$DTB" | tr '/' '_')

			# Skip DTB/DTBO if we've picked it up previously
			echo "$DTBS" | tr ' ' '\n' | grep -xq "$DTB" && continue

			fitimage_ti_secure ${EXTERNAL_KERNEL_DEVICETREE}/${DTB} ${EXTERNAL_KERNEL_DEVICETREE}/${DTB}.sec

			DTBS="$DTBS $DTB"
			fitimage_emit_section_dtb $1 $DTB "${EXTERNAL_KERNEL_DEVICETREE}/${DTB}.sec"
		done
	fi

	#
	# Step 3: Prepare a u-boot script section
	#

	if [ -n "${UBOOT_ENV}" ] && [ -d "${STAGING_DIR_HOST}/boot" ]; then
		if [ -e "${STAGING_DIR_HOST}/boot/${UBOOT_ENV_BINARY}" ]; then
			cp ${STAGING_DIR_HOST}/boot/${UBOOT_ENV_BINARY} ${B}
			bootscr_id="${UBOOT_ENV_BINARY}"
			fitimage_emit_section_boot_script $1 "$bootscr_id" ${UBOOT_ENV_BINARY}
		else
			bbwarn "${STAGING_DIR_HOST}/boot/${UBOOT_ENV_BINARY} not found."
		fi
	fi

	#
	# Step 4: Prepare a setup section. (For x86)
	#
	if [ -e arch/${ARCH}/boot/setup.bin ]; then
		setupcount=1
		fitimage_emit_section_setup $1 $setupcount arch/${ARCH}/boot/setup.bin
	fi

	#
	# Step 5: Prepare a ramdisk section.
	#
	if [ "x${ramdiskcount}" = "x1" ] && [ "${INITRAMFS_IMAGE_BUNDLE}" != "1" ]; then
		# Find and use the first initramfs image archive type we find
		found=
		for img in ${FIT_SUPPORTED_INITRAMFS_FSTYPES}; do
			initramfs_path="${DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.$img"
			initramfs_local="usr/${INITRAMFS_IMAGE_NAME}.$img"
			if [ -e "$initramfs_path" ]; then
				bbnote "Found initramfs image: $initramfs_path"
				found=true
				fitimage_ti_secure ${initramfs_path} ${initramfs_local}.sec

				fitimage_emit_section_ramdisk $1 "$ramdiskcount" "${initramfs_local}.sec"
				break
			else
				bbnote "Did not find initramfs image: $initramfs_path"
			fi
		done

		if [ -z "$found" ]; then
			bbfatal "Could not find a valid initramfs type for ${INITRAMFS_IMAGE_NAME}, the supported types are: ${FIT_SUPPORTED_INITRAMFS_FSTYPES}"
		fi
	fi

	fitimage_emit_section_maint $1 sectend

	# Force the first Kernel and DTB in the default config
	kernelcount=1
	if [ -n "$dtbcount" ]; then
		dtbcount=1
	fi

	#
	# Step 6: Prepare a configurations section
	#
	fitimage_emit_section_maint $1 confstart

	# kernel-fitimage.bbclass currently only supports a single kernel (no less or
	# more) to be added to the FIT image along with 0 or more device trees and
	# 0 or 1 ramdisk.
        # It is also possible to include an initramfs bundle (kernel and rootfs in one binary)
        # When the initramfs bundle is used ramdisk is disabled.
	# If a device tree is to be part of the FIT image, then select
	# the default configuration to be used is based on the dtbcount. If there is
	# no dtb present than select the default configuation to be based on
	# the kernelcount.
	if [ -n "$DTBS" ]; then
		i=1
		for DTB in ${DTBS}; do
			dtb_ext=${DTB##*.}
			if [ "$dtb_ext" = "dtbo" ]; then
				fitimage_emit_section_config $1 "" "$DTB" "" "$bootscr_id" "" "`expr $i = $dtbcount`"
			else
				fitimage_emit_section_config $1 $kernelcount "$DTB" "$ramdiskcount" "$bootscr_id" "$setupcount" "`expr $i = $dtbcount`"
			fi
			i=`expr $i + 1`
		done
	else
		defaultconfigcount=1
		fitimage_emit_section_config $1 $kernelcount "" "$ramdiskcount" "$bootscr_id"  "$setupcount" $defaultconfigcount
	fi

	fitimage_emit_section_maint $1 sectend

	fitimage_emit_section_maint $1 fitend

	#
	# Step 7: Assemble the image
	#
	${UBOOT_MKIMAGE} \
		${@'-D "${UBOOT_MKIMAGE_DTCOPTS}"' if len('${UBOOT_MKIMAGE_DTCOPTS}') else ''} \
		-f $1 \
		arch/${ARCH}/boot/$2

	#
	# Step 8: Sign the image and add public key to U-Boot dtb
	#
	if [ "x${UBOOT_SIGN_ENABLE}" = "x1" ] ; then
		add_key_to_u_boot=""
		if [ -n "${UBOOT_DTB_BINARY}" ]; then
			# The u-boot.dtb is a symlink to UBOOT_DTB_IMAGE, so we need copy
			# both of them, and don't dereference the symlink.
			cp -P ${STAGING_DATADIR}/u-boot*.dtb ${B}
			add_key_to_u_boot="-K ${B}/${UBOOT_DTB_BINARY}"
		fi
		${UBOOT_MKIMAGE_SIGN} \
			${@'-D "${UBOOT_MKIMAGE_DTCOPTS}"' if len('${UBOOT_MKIMAGE_DTCOPTS}') else ''} \
			-F -k "${UBOOT_SIGN_KEYDIR}" \
			$add_key_to_u_boot \
			-r arch/${ARCH}/boot/$2 \
			${UBOOT_MKIMAGE_SIGN_ARGS}
	fi
}

fitimage_ti_secure() {
	if test -n "${TI_SECURE_DEV_PKG}"; then
		export TI_SECURE_DEV_PKG=${TI_SECURE_DEV_PKG}
		${TI_SECURE_DEV_PKG}/scripts/secure-binary-image.sh $1 $2
	else
		cp $1 $2
	fi
}