build scripts error

Hi Team,

My processor RZG2N

Package using: VLP3.0.5

For building my arm trusted firmware, I have used build scripts.

I have followed the steps mentioned in the following site exactly.

https://github.com/renesas-rz/rzg2_bsp_scripts/tree/master/build_scripts

I have successfully configured the board using this command: ./build.sh s

Then I have used ./build.sh t command for building,

Then following error is appeared,

vishnu@vishnu-Latitude-3520:~/rzg2_bsp_scripts/build_scripts$ ./build.sh t
cd rzg_trusted-firmware-a
PATH=/opt/linaro/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu/bin:$PATH ; export CROSS_COMPILE=aarch64-linux-gnu-
make distclean
REALCLEAN
make -j 16 bl2 bl31 rzg PLAT=rzg LSI=G2N SPD=none RCAR_LOSSY_ENABLE=1 RCAR_RPC_HYPERFLASH_LOCKED=0 RCAR_SA6_TYPE=1 RZG_DRAM_ECC_FULL=0 LOG_LEVEL=40 MBEDTLS_DIR=../mbedtls
make: *** No rule to make target '../mbedtls/library/constant_time.c', needed by '/home/vishnu/rzg2_bsp_scripts/build_scripts/rzg_trusted-firmware-a/build/rzg/release/libmbedtls/constant_time.o'. Stop.
make: *** Waiting for unfinished jobs....

Please help me with this, I am getting Init DRAM error in my BL2, so i have changed the boot_init_dram_config.c file in arm trusted firmware for changing my ram configuration. So I need to build it and use the bl2 and bl31 srecord files for transferring to EMMC.

Please help me with this situation.

Thanks in advance,

Kartha.