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[syn] Add more Ibex parameters to flow

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Can now control writeback stage inclusion, bitmanip extension and
multiplier implementation.
This commit is contained in:
Greg Chadwick 2020-05-20 11:25:30 +01:00
parent 2cfb5e8d78
commit 5b97c26510
2 changed files with 13 additions and 0 deletions
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3
syn/tcl/lr_synth_flow_var_setup.tcl
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@ -14,6 +14,9 @@ set_flow_var rpt_out "./${lr_synth_out_dir}/reports" "Report output directory"
set_flow_bool_var flatten 1 "flatten"
set_flow_bool_var timing_run 0 "timing run"
set_flow_bool_var ibex_branch_target_alu 0 "Enable branch target ALU in Ibex"
set_flow_bool_var ibex_writeback_stage 0 "Enable writeback stage in Ibex"
set_flow_bool_var ibex_bitmanip 0 "Enable bitmanip extenion for Ibex"
set_flow_var ibex_multiplier "fast" "Multiplier implementation for Ibex (slow/fast/single-cycle)"
source $lr_synth_config_file

10
syn/tcl/yosys_run_synth.tcl
View file

@ -20,6 +20,16 @@ if { $lr_synth_ibex_branch_target_alu } {
yosys "chparam -set BranchTargetALU 1 ibex_core"
}
if { $lr_synth_ibex_writeback_stage } {
yosys "chparam -set WritebackStage 1 ibex_core"
}
if { $lr_synth_ibex_bitmanip } {
yosys "chparam -set RV32B 1 ibex_core"
}
yosys "chparam -set MultiplierImplementation \"$lr_synth_ibex_multiplier\" ibex_core"
yosys "synth $flatten_opt -top $lr_synth_top_module"
yosys "opt -purge"