42 lines
2.1 KiB
Markdown
42 lines
2.1 KiB
Markdown
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# SweRV RISC-V EL2 core from Western Digital
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## Configuration
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### Contents
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Name | Description
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---------------------- | ------------------------------
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swerv.config | Configuration script for SweRV-EL2
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This script will generate a consistent set of `defines/#defines/parameters` needed for the design and testbench.
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A perl hash (*perl_configs.pl*) and a JSON format for SweRV-iss are also generated.
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This set of include files :
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$RV_ROOT/configs/snapshots/<target>
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├── common_defines.vh # `defines for testbench
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├── defines.h # #defines for C/assembly headers
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├── el2_param.vh # Actual Design parameters
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├── el2_pdef.vh # Parameter structure definition
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├── pd_defines.vh # `defines for physical design
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├── perl_configs.pl # Perl %configs hash for scripting
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├── el2_pic_ctrl_verilator_unroll.sv # Unrolled verilog based on PIC size (for verilator only)
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├── pic_map_auto.h # PIC memory map based on configure size
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└── whisper.json # JSON file for swerv-iss
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While the defines may be modified by hand, it is recommended that this script be used to generate a consistent set.
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### Targets
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There are 4 predefined target configurations: `default`, `default_ahb`, `typical_pd` and `high_perf` that can be selected via the `-target=name` option to swerv.config.
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Target | Description
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---------------------- | ------------------------------
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default | Default configuration. AXI4 bus interface.
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default_ahb | Default configuration, AHB-Lite bus interface
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typical_pd | No ICCM, AXI4 bus interface
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high_perf | Large BTB/BHT, AXI4 interface
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`swerv.config` may be edited to add additional target configurations, or new configurations may be created via the command line `-set` or `-unset` options.
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