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[Flow] Disable DFFE and SDFF in no-ff Yosys scripts

This commit is contained in:
tangxifan 2021-10-30 13:29:38 -07:00
parent 18bab18032
commit 978c60e75b
1 changed files with 7 additions and 6 deletions
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13
openfpga_flow/misc/ys_tmpl_yosys_vpr_bram_dsp_flow.ys
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@ -25,12 +25,12 @@ opt_clean
# demote inout ports to input or output port # demote inout ports to input or output port
# with follow-up optimizations to clean up AST # with follow-up optimizations to clean up AST
deminout deminout
opt opt -nodffe -nosdff
opt_expr opt_expr
opt_clean opt_clean
check check
opt opt -nodffe -nosdff
wreduce -keepdc wreduce -keepdc
peepopt peepopt
pmuxtree pmuxtree
@ -58,10 +58,10 @@ chtype -set $mul t:$__soft_mul# Extract arithmetic functions
techmap techmap
alumacc alumacc
share share
opt opt -nodffe -nosdff
fsm fsm
# Run a quick follow-up optimization to sweep out unused nets/signals # Run a quick follow-up optimization to sweep out unused nets/signals
opt -fast opt -fast -nodffe -nosdff
# Optimize any memory cells by merging share-able ports and collecting all the ports belonging to memorcy cells # Optimize any memory cells by merging share-able ports and collecting all the ports belonging to memorcy cells
memory -nomap memory -nomap
opt_clean opt_clean
@ -78,14 +78,15 @@ opt -undriven -fine
######################### #########################
# Map flip-flops # Map flip-flops
######################### #########################
dfflegalize -cell $_DFF_P_ 0
techmap -map +/adff2dff.v techmap -map +/adff2dff.v
opt_expr -mux_undef opt_expr -mux_undef
simplemap simplemap
opt_expr opt_expr
opt_merge opt_merge
opt_dff opt_dff -nodffe -nosdff
opt_clean opt_clean
opt opt -nodffe -nosdff
######################### #########################
# Map LUTs # Map LUTs