Introduction

This is the user-space portion for loading an FPGA bitstream on an Xilinx Zynq UltraScale+ MPSOC in combination with OP-TEE.

The trusted OS part is implemented as static TA within OP-TEE (not upstream as of now).

Build Instructions

Building the use-space application requires the TEE client library and the TA devkit from an OP-TEE build.

Environment Variables

• HOST_CROSS_COMPILE: Toolchain for the architecture the application will run on
• TEEC_EXPORT: TEE client library exports
• TA_DEV_KIT_DIR: Directory of the TA devkit

Build Commands

make

Running the Application

./bsload [<bitstream_file>]

Options

• bitstream_file: Bitstream to load (bs.bit)

Preparing the Bitstream

The TA expects a bitstream in bin format. A .bit file can be converted to a .bin using the bootgen utility following this AR.

Known Issues

• The TA assumes that all necessary pre-processing of the bitstream is done in user-space. Currently that requires user-space to convert the endianess of the .bit file. This step is currently not implemented in the user-space application. Hence, the bitstream passed to this application needs to be prepared accordingly beforehand.

Todos

• Add bitstream processing to application (see Known Issues)

Credits

• build and application boilerplate has been copied from https://github.com/jenswi-linaro/lcu14_optee_hello_world