From: Sebastien Bourdeauducq <sebastien@milkymist.org>
Date: Tue, 26 Mar 2013 18:17:35 +0000 (+0100)
Subject: Support for platform info
X-Git-Tag: 24jan2021_ls180~2099^2~443^2~46
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3b19dfc412137393f1f3d3d5907f3aca05c21bd8;p=litex.git

Support for platform info
---

diff --git a/mibuild/generic_platform.py b/mibuild/generic_platform.py
index e3436045..3ff2f02e 100644
--- a/mibuild/generic_platform.py
+++ b/mibuild/generic_platform.py
@@ -31,6 +31,10 @@ class Subsignal:
 		self.name = name
 		self.constraints = list(constraints)
 
+class PlatformInfo:
+	def __init__(self, info):
+		self.info = info
+
 def _lookup(description, name, number):
 	for resource in description:
 		if resource[0] == name and (number is None or resource[1] == number):
@@ -79,6 +83,10 @@ class ConstraintManager:
 			obj = Signal(rt, name_override=resource[0])
 		else:
 			obj = Record(rt, name=resource[0])
+		for element in resource[2:]:
+			if isinstance(element, PlatformInfo):
+				obj.platform_info = element.info
+				break
 		self.available.remove(resource)
 		self.matched.append((resource, obj))
 		return obj
diff --git a/mibuild/xilinx_ise.py b/mibuild/xilinx_ise.py
index 7d194c53..cddbbb81 100644
--- a/mibuild/xilinx_ise.py
+++ b/mibuild/xilinx_ise.py
@@ -46,7 +46,11 @@ def _format_constraint(c):
 		return c.misc
 
 def _format_ucf(signame, pin, others, resname):
-	fmt_c = [_format_constraint(c) for c in ([Pins(pin)] + others)]
+	fmt_c = []
+	for c in [Pins(pin)] + others:
+		fc = _format_constraint(c)
+		if fc is not None:
+			fmt_c.append(fc)
 	fmt_r = resname[0] + ":" + str(resname[1])
 	if resname[2] is not None:
 		fmt_r += "." + resname[2]