|
| 1 | + |
| 2 | +.. index:: |
| 3 | + single: Generate the Binary file format |
| 4 | + |
| 5 | +Generate the Binary File format |
| 6 | +====================================== |
| 7 | + |
| 8 | + |
| 9 | +FPGA Binary file can be generated, which will contain the following components: |
| 10 | + |
| 11 | +1. FPGA Bitstream |
| 12 | +2. FPGA MemInit (RAM Block Initialization) |
| 13 | +3. FPGA IOMux Configuration |
| 14 | + |
| 15 | +Then, FPGA bin [${TOP}.bin] == bitstream bin + meminit bin + iomux bin |
| 16 | + |
| 17 | +We will need a header in the FPGA bin which indicates the component information (sizes). |
| 18 | + |
| 19 | +The diagrams below show a complete picture of the FPGA bin structure. |
| 20 | + |
| 21 | +FPGA bin header |
| 22 | +~~~~~~~~~~~~~~~ |
| 23 | + |
| 24 | +.. image:: fpga-bin-structure-header.png |
| 25 | + |
| 26 | +The header contains the fields: |
| 27 | + |
| 28 | +- FPGA BIN VERSION - which will help handle future changes in bin structure if needed. Currently at v0.1. |
| 29 | +- BITSTREAM BIN SIZE, CRC - size in bytes, and crc of the bitstream binary content |
| 30 | +- MEMINIT BIN SIZE, CRC - size in bytes, and crc of the meminit binary content |
| 31 | +- IOMUX BIN SIZE, CRC - size in bytes, and crc of the iomux binary content |
| 32 | +- RESERVED WORD - for future usage |
| 33 | + |
| 34 | +FPGA bitstream bin |
| 35 | +~~~~~~~~~~~~~~~~~~ |
| 36 | + |
| 37 | +.. image:: fpga-bin-structure-bitstream.png |
| 38 | + |
| 39 | +The bitstream bin will have 4B words, exactly as is currently generated in ${TOP}.bit |
| 40 | + |
| 41 | +FPGA meminit bin |
| 42 | +~~~~~~~~~~~~~~~~ |
| 43 | + |
| 44 | +.. image:: fpga-bin-structure-meminit.png |
| 45 | + |
| 46 | +The meminit bin will have the same structure as is currently generated in the header method. |
| 47 | + |
| 48 | +For each RAM block, we will have: |
| 49 | + |
| 50 | +- RAM block start address 4B |
| 51 | +- RAM block size 4B |
| 52 | +- size B of initialization values |
| 53 | + |
| 54 | +This set will be repeated for as many RAM blocks intialized in the design. |
| 55 | + |
| 56 | +FPGA iomux bin |
| 57 | +~~~~~~~~~~~~~~ |
| 58 | + |
| 59 | +.. image:: fpga-bin-structure-iomux.png |
| 60 | + |
| 61 | +The iomux bin will have a set of pad configurations, each pad configuration is: |
| 62 | + |
| 63 | +- 4B Reg Address |
| 64 | +- 4B Reg Value |
| 65 | + |
| 66 | +The number of pad configurations would be equal to the number of pads used by the FPGA design. |
| 67 | + |
| 68 | +Syntax: |
| 69 | + |
| 70 | +.. code-block:: shell |
| 71 | +
|
| 72 | + ql_symbiflow -compile -src <source complete path> -d <device> -t <top module name> -v <verilog files> -p <pcf file> -P <Package file> -s <SDC file> -dump binary |
| 73 | +
|
| 74 | +The output files dumped will be : |
| 75 | + |
| 76 | +<TOP>.bin - *file generated from the bit file input* |
| 77 | + |
| 78 | +.. code-block:: shell |
| 79 | +
|
| 80 | + ql_symbiflow -compile -src $PWD -d ql-eos-s3 -t top -v counter_16bit.v -p chandalar.pcf -P PD64 -s counter_16bit.sdc -dump binary |
| 81 | +
|
| 82 | +The generated binary file can then be flashed into the board with the programmer, and the bootloader can automatically can load the FPGA design. |
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