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picorv32/openlane_params.tcl

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Added Openlane support with CI As part of my and Olof Kindgrens work on adding Openlane support to Edalize, we've noticed that a lot of the examples in the Openlane repository are from other known sources and we would prefer to upstream when possible. This commit adds a tcl file with parameters for Openlane, a sky130 target using Openlane in the core, and a github action for building it on push.
2021-05-11 04:28:59 -04:00
# These values are taken from the designs examples in the Openlane repository
set ::env(CLOCK_PORT) "clk"
set ::env(CLOCK_NET) $::env(CLOCK_PORT)
set ::env(GLB_RT_ADJUSTMENT) 0.1
set ::env(SYNTH_MAX_FANOUT) 6
set ::env(CLOCK_PERIOD) "24.73"
set ::env(FP_CORE_UTIL) 30
set ::env(PL_TARGET_DENSITY) [ expr ($::env(FP_CORE_UTIL)+5) / 100.0 ]