Pulpino without PS

[istillaga]

Hello,

I am trying to generate pulpino's bitstream without using the processing system loading the programs via SPI SLAVE. I modified the pulpemu folder deleting all the processing system's part and I managed to generate the bitstream but I am getting this warnings:

WARNING: [DRC 23-20] Rule violation (DPIP-1) Input pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/mult_i/__0 input A B is not pipelined. Pipelining DSP48 input will improve performance.
WARNING: [DRC 23-20] Rule violation (DPIP-1) Input pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/mult_i/__0__0 input A B is not pipelined. Pipelining DSP48 input will improve performance.
WARNING: [DRC 23-20] Rule violation (DPIP-1) Input pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/mult_i/__1 input B is not pipelined. Pipelining DSP48 input will improve performance.
WARNING: [DRC 23-20] Rule violation (DPIP-1) Input pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/mult_i/short_mac input A B C is not pipelined. Pipelining DSP48 input will improve performance.
WARNING: [DRC 23-20] Rule violation (DPIP-1) Input pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/mult_i/short_mul input A B is not pipelined. Pipelining DSP48 input will improve performance.
WARNING: [DRC 23-20] Rule violation (DPIP-1) Input pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/p_0_out input A B is not pipelined. Pipelining DSP48 input will improve performance.
WARNING: [DRC 23-20] Rule violation (DPOP-1) Output pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/mult_i/__0 output P is not pipelined. Pipelining DSP48 output will improve performance. Both multiplier/adder output can be pipelined.
WARNING: [DRC 23-20] Rule violation (DPOP-1) Output pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/mult_i/__0__0 output P is not pipelined. Pipelining DSP48 output will improve performance. Both multiplier/adder output can be pipelined.
WARNING: [DRC 23-20] Rule violation (DPOP-1) Output pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/mult_i/__1 output P is not pipelined. Pipelining DSP48 output will improve performance. Both multiplier/adder output can be pipelined.
WARNING: [DRC 23-20] Rule violation (DPOP-1) Output pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/mult_i/short_mac output P is not pipelined. Pipelining DSP48 output will improve performance. Both multiplier/adder output can be pipelined.
WARNING: [DRC 23-20] Rule violation (DPOP-1) Output pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/mult_i/short_mul output P is not pipelined. Pipelining DSP48 output will improve performance. Both multiplier/adder output can be pipelined.
WARNING: [DRC 23-20] Rule violation (DPOP-1) Output pipelining - DSP u_pulpino/pulpino_i/core_region_i/CORE.RISCV_CORE/ex_stage_i/p_0_out output P is not pipelined. Pipelining DSP48 output will improve performance. Both multiplier/adder output can be pipelined.
WARNING: [DRC 23-20] Rule violation (ZPS7-1) PS7 block required - The PS7 cell must be used in this Zynq design in order to enable correct default configuration.

Then with Vivado I transfer the bitstream to the zedboard and send the code to load the program via SPI SLAVE but I don't get any answer from MISO and it doesn't load the program.

Any help?

[kgf]

First of all consider using PULPissimo not PULPino which was our first release many years ago.

The DPIP-1 DOPOP-1 warnings are performance related, they should not be an issue.

I am not so sure about the PS7 block. I think at the time, we used the PS block as part of the external communoication/debugger etc.. so it really should be part of the design.. I think using PULPIssimo would be a better solution..