commit f12087fed38a7ae9022b13511e37dab8fcec19c9
author Sylvain Munaut <tnt@246tNt.com> Tue May 03 13:56:23 2022 +0200
committer Sylvain Munaut <tnt@246tNt.com> Tue May 03 14:00:35 2022 +0200
tree 8011ac2f78d2e04f0a68b563f5daf71f1ef3731a
parent 90ca05dd54c03633b7196b00848d06a91ddfdae6

gateware/icE1usb: Don't let nextpnr promote globals

We manually use global buffers for the signals that need to be
global, don't let nextpnr heuristic mess with things.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Change-Id: I5dc5f2f39dca933b2570cbe4e26d9d7fd2a44688

gateware/icE1usb/Makefile

diff --git a/gateware/icE1usb/Makefile b/gateware/icE1usb/Makefile
index 2bfd1b5..790a1cb 100644
--- a/gateware/icE1usb/Makefile
+++ b/gateware/icE1usb/Makefile
@@ -38,7 +38,7 @@
 
 SEED ?= 15
 YOSYS_SYNTH_ARGS :=
-NEXTPNR_ARGS := --pre-pack data/clocks.py --pre-pack data/opt.py --seed $(SEED)
+NEXTPNR_ARGS := --pre-pack data/clocks.py --pre-pack data/opt.py --seed $(SEED) --no-promote-globals
 
 ifeq ($(IGNORE_TIMING),1)
 	NEXTPNR_ARGS += --timing-allow-fail