#!/bin/bash

# include uboot pre-build macros
#declare CONFIG_FILE=("${buildtree}/.config")
#declare AUTOCFG_FILE=("${buildtree}/include/autoconf.mk")

function init_vari() {
	#source ${CONFIG_FILE} &> /dev/null # ignore warning/error
	#source ${AUTOCFG_FILE} &> /dev/null # ignore warning/error

	AML_BL2_NAME="bl2.bin"
	AML_KEY_BLOB_NAME="aml-user-key.sig"

	if [ "y" == "${CONFIG_AML_SECURE_BOOT_V3}" ]; then
		V3_PROCESS_FLAG="--level v3"
	fi

	if [ "y" == "${CONFIG_AML_BL33_COMPRESS_ENABLE}" ]; then
		BL33_COMPRESS_FLAG="--compress lz4"
	fi

	if [ "y" == "${CONFIG_FIP_IMG_SUPPORT}" ]; then
		BL3X_SUFFIX="img"
	fi
}

function fix_blx() {
	#bl2 file size 41K, bl21 file size 3K (file size not equal runtime size)
	#total 44K
	#after encrypt process, bl2 add 4K header, cut off 4K tail

	#bl2 file size 56K, acs file size 4K
	#total 60K
	#after encrypt process, bl2 add 4K header, cut off 4K tail

	#bl30 limit 41K
	#bl301 limit 12K

	#bl2 limit 56K
	#acs limit 4K, but encrypt tool need 64K bl2.bin, so fix to 8192byte.

	declare blx_bin_limit=0
	declare blx01_bin_limit=0
	declare -i blx_size=0
	declare -i zero_size=0

	#$7:name flag
	if [ "$7" = "bl30" ]; then
		blx_bin_limit=64512 # 63KB + 1KB header ao cpu for T5
		blx01_bin_limit=0   # no bl301 for T5
	elif [ "$7" = "bl2" ]; then
		blx_bin_limit=73728 #72KB
		blx01_bin_limit=4096
	else
		echo "blx_fix name flag not supported!"
		exit 1
	fi

	# blx_size: blx.bin size, zero_size: fill with zeros
	blx_size=`du -b $1 | awk '{print int($1)}'`
	if [ $blx_size -gt $blx_bin_limit ]; then
		echo "Error: $7 ($1) too big. $blx_size > $blx_bin_limit"
		exit 1
	fi

	zero_size=$blx_bin_limit-$blx_size
	dd if=/dev/zero of=$2 bs=1 count=$zero_size
	cat $1 $2 > $3
	rm $2

	if [ "$7" = "bl2" ]; then
		blx_size=`du -b $4 | awk '{print int($1)}'`
		zero_size=$blx01_bin_limit-$blx_size
		dd if=/dev/zero of=$2 bs=1 count=$zero_size
		cat $4 $2 > $5

		cat $3 $5 > $6

		rm $2
	fi
}

function cleanup() {
	rm -f ${BUILD_PATH}/bl*.enc ${BUILD_PATH}/bl2*.sig
}

function encrypt_step() {
	dbg "encrypt: $@"
	local ret=0
	./${FIP_FOLDER}${CUR_SOC}/aml_encrypt_${CUR_SOC} $@
	ret=$?
	if [ 0 != $ret ]; then
		echo "Err! aml_encrypt_${CUR_SOC} return $ret"
		exit $ret
	fi
}

function encrypt() {
	#u-boot.bin generate
	if [ "y" == "${CONFIG_AML_SECURE_BOOT_V3}" ]; then
		#encrypt_step --bl30sig --input ${BUILD_PATH}/bl30_new.bin         --output ${BUILD_PATH}/bl30_new.bin.g12.enc ${V3_PROCESS_FLAG}
		encrypt_step --bl3sig  --input ${BUILD_PATH}/bl30_new.bin --output ${BUILD_PATH}/bl30_new.bin.enc ${V3_PROCESS_FLAG} --type bl30
		encrypt_step --bl3sig  --input ${BUILD_PATH}/bl31.${BL3X_SUFFIX}  --output ${BUILD_PATH}/bl31.${BL3X_SUFFIX}.enc ${V3_PROCESS_FLAG} --type bl31
		if [ "${FIP_BL32}" == "${BUILD_PATH}/bl32.${BL3X_SUFFIX}" ]; then
			encrypt_step --bl3sig  --input ${BUILD_PATH}/bl32.${BL3X_SUFFIX} --output ${BUILD_PATH}/bl32.${BL3X_SUFFIX}.enc ${V3_PROCESS_FLAG} --type bl32
		fi
		encrypt_step --bl3sig  --input ${BUILD_PATH}/bl33.bin ${BL33_COMPRESS_FLAG} --output ${BUILD_PATH}/bl33.bin.enc ${V3_PROCESS_FLAG} --type bl33
	fi

	encrypt_step --bl2sig  --input ${BUILD_PATH}/bl2_new.bin   --output ${BUILD_PATH}/bl2.n.bin.sig

	encrypt_step --bootmk  --output ${BUILD_PATH}/u-boot.bin \
		--bl2   ${BUILD_PATH}/bl2.n.bin.sig  \
		--bl30  ${BUILD_PATH}/bl30_new.bin.enc \
		--bl31  ${BUILD_PATH}/bl31.${BL3X_SUFFIX}.enc ${FIP_BL32_PROCESS} --bl33  ${BUILD_PATH}/bl33.bin.enc ${V3_PROCESS_FLAG} 

	if [ "y" == "${CONFIG_AML_CRYPTO_UBOOT}" ]; then
		echo "no action!"
		encrypt_step --efsgen --amluserkey ${UBOOT_SRC_FOLDER}/${BOARD_DIR}/${AML_KEY_BLOB_NAME} \
			--output ${BUILD_PATH}/u-boot.bin.encrypt.efuse ${V3_PROCESS_FLAG}
		encrypt_step --bootsig --input ${BUILD_PATH}/u-boot.bin --amluserkey ${UBOOT_SRC_FOLDER}/${BOARD_DIR}/${AML_KEY_BLOB_NAME} \
			--aeskey enable --output ${BUILD_PATH}/u-boot.bin.encrypt ${V3_PROCESS_FLAG}
	fi

	if [ "y" == "${CONFIG_AML_CRYPTO_IMG}" ]; then
		encrypt_step --imgsig --input ${UBOOT_SRC_FOLDER}/${BOARD_DIR}/boot.img --amluserkey ${UBOOT_SRC_FOLDER}/${BOARD_DIR}/${AML_KEY_BLOB_NAME} --output ${BUILD_PATH}/boot.img.encrypt
	fi

	return
}

function build_fip() {
	fix_blx \
		${BUILD_PATH}/bl30.bin \
		${BUILD_PATH}/zero_tmp \
		${BUILD_PATH}/bl30_new.bin \
		${BUILD_PATH}/zero_tmp \
		${BUILD_PATH}/zero_tmp \
		${BUILD_PATH}/zero_tmp \
		bl30

	# acs_tool process ddr timing and configurable parameters
	#python ${FIP_FOLDER}/acs_tool.pyc ${BUILD_PATH}/${AML_BL2_NAME} ${BUILD_PATH}/bl2_acs.bin ${BUILD_PATH}/acs.bin 0

	# fix bl2/bl21
	fix_blx \
		${BUILD_PATH}/bl2.bin \
		${BUILD_PATH}/zero_tmp \
		${BUILD_PATH}/bl2_zero.bin \
		${BUILD_PATH}/acs.bin \
		${BUILD_PATH}/bl21_zero.bin \
		${BUILD_PATH}/bl2_new.bin \
		bl2

	if [ "y" == "${CONFIG_NEED_BL32}" ]; then
		FIP_BL32="`find ${BUILD_PATH} -name "bl32.${BL3X_SUFFIX}"`"
		if [ "${FIP_BL32}" == "${BUILD_PATH}/bl32.${BL3X_SUFFIX}" ]; then
			FIP_BL32_PROCESS=" --bl32 ${BUILD_PATH}/bl32.${BL3X_SUFFIX}.enc"
		fi
	fi
	return
}

function copy_other_soc() {
	#cp ${UBOOT_SRC_FOLDER}/build/scp_task/bl301.bin ${BUILD_PATH} -f
	#useless #cp ${UBOOT_SRC_FOLDER}/build/${BOARD_DIR}/firmware/bl21.bin ${BUILD_PATH} -f
	cp ${UBOOT_SRC_FOLDER}/build/${BOARD_DIR}/firmware/acs.bin ${BUILD_PATH} -f
	#./${FIP_BUILD_FOLDER}/parse ${BUILD_PATH}/acs.bin
	# todo. cp bl40?
}

function package() {
	# BUILD_PATH without "/"
	x=$((${#BUILD_PATH}-1))
	if [ "\\" == "${BUILD_PATH:$x:1}" ] || [ "/" == "${BUILD_PATH:$x:1}" ]; then
		BUILD_PATH=${BUILD_PATH:0:$x}
	fi

	init_vari $@
	build_fip $@
	if [ 1 -eq ${CONFIG_DDR_FW} ]; then
		echo -n "Copy ddr fw..."
		cp ${BLX_SRC_FOLDER}/${DDR_FW_NAME} ${FIP_FOLDER}/${CUR_SOC} -f
		if [ 0 != $? ]; then
			echo " failed!"
		else
			echo " ok!"
		fi
	fi

	if [ "y" == "${CONFIG_AML_SIGNED_UBOOT}" ]; then

		mv -f ${BUILD_PATH}/bl33.bin  ${BUILD_PATH}/bl33.bin.org
		encrypt_step --bl3sig  --input ${BUILD_PATH}/bl33.bin.org --output ${BUILD_PATH}/bl33.bin.org.lz4 --compress lz4 --level v3 --type bl33
		#get LZ4 format bl33 image from bl33.bin.enc with offset 0x720
		dd if=${BUILD_PATH}/bl33.bin.org.lz4 of=${BUILD_PATH}/bl33.bin bs=1 skip=1824 >& /dev/null

		list_pack="${BUILD_PATH}/bl2_new.bin ${BUILD_PATH}/bl30_new.bin ${BUILD_PATH}/bl31.img ${BUILD_PATH}/bl32.img ${BUILD_PATH}/bl33.bin"
		list_pack="$list_pack ${FIP_FOLDER}/${CUR_SOC}/*.fw"
		u_pack=${BUILD_FOLDER}/"$(basename ${BOARD_DIR})"-u-boot.aml.zip
		zip -j $u_pack ${list_pack} >& /dev/null

		${FIP_FOLDER}/stool/sign.sh -s ${CUR_SOC} -z $u_pack -o ${BUILD_FOLDER} -r ${UBOOT_SRC_FOLDER}/${BOARD_DIR}/aml-key -a ${UBOOT_SRC_FOLDER}/${BOARD_DIR}/aml-key

		if [ "y" == "${CONFIG_AML_CRYPTO_IMG}" ]; then
				${FIP_FOLDER}/stool/sign.sh -s ${CUR_SOC} -p ${UBOOT_SRC_FOLDER}/${BOARD_DIR} -o ${BUILD_FOLDER} -r ${UBOOT_SRC_FOLDER}/${BOARD_DIR}/aml-key -a ${UBOOT_SRC_FOLDER}/${BOARD_DIR}/aml-key
		fi
	else
		encrypt $@
	fi
	#copy_file
	#cleanup
	echo "Bootloader build done!"
}