Yocto Build SCFW from source code

Install the SCFW toolchain

$ wget https://developer.arm.com/-/media/Files/downloads/gnu-rm/8-2018q4/gcc-arm-none-eabi-8-2018-q4-major-linux.tar.bz2
$ sudo tar xf gcc-arm-none-eabi-8-2018-q4-major-linux.tar.bz2 -C /opt

Download the SCFW source code

$ git clone https://github.com/varigit/imx-sc-firmware.git -b 1.5.1

Build the SCFW image

$ cd imx-sc-firmware/src/scfw_export_mx8qx_b0
$ export TOOLS=/opt

$ make clean-qx
$ make qx R=B0 B=var_som V=1

The SCFW image, scfw_tcm.bin, is located under build_mx8qx_b0