From a947f09bfbc4d7a87c74a6df4b72c0fa7fbfffe9 Mon Sep 17 00:00:00 2001 From: Arnaud Durand Date: Thu, 22 Aug 2019 00:43:03 +0200 Subject: Restrict clock promotion to global --- ecp5/globals.cc | 3 +++ 1 file changed, 3 insertions(+) diff --git a/ecp5/globals.cc b/ecp5/globals.cc index 9dd4449b..724b0fd4 100644 --- a/ecp5/globals.cc +++ b/ecp5/globals.cc @@ -435,6 +435,9 @@ class Ecp5GlobalRouter log_info("Promoting globals...\n"); auto clocks = get_clocks(); for (auto clock : clocks) { + bool is_global = bool_or_default(clock->attrs, ctx->id("ECP5_IS_GLOBAL"), true); + if (!is_global) + continue; log_info(" promoting clock net %s to global network\n", clock->name.c_str(ctx)); if (is_ooc) // Don't actually do anything in OOC mode, global routing will be done in the full design clock->is_global = true; -- cgit v1.2.3 From a26c9bb6d9aaa78fd3deae94e3db840286dacf8a Mon Sep 17 00:00:00 2001 From: Arnaud Durand Date: Sat, 24 Aug 2019 18:09:42 +0200 Subject: Rename clock restriction attribute to "noglobal" --- ecp5/globals.cc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/ecp5/globals.cc b/ecp5/globals.cc index 724b0fd4..bc5c66df 100644 --- a/ecp5/globals.cc +++ b/ecp5/globals.cc @@ -435,8 +435,8 @@ class Ecp5GlobalRouter log_info("Promoting globals...\n"); auto clocks = get_clocks(); for (auto clock : clocks) { - bool is_global = bool_or_default(clock->attrs, ctx->id("ECP5_IS_GLOBAL"), true); - if (!is_global) + bool is_noglobal = bool_or_default(clock->attrs, ctx->id("noglobal"), false); + if (is_noglobal) continue; log_info(" promoting clock net %s to global network\n", clock->name.c_str(ctx)); if (is_ooc) // Don't actually do anything in OOC mode, global routing will be done in the full design -- cgit v1.2.3