From 2fb8526bfb657b256f1fc441ac0d9fe86e0fd561 Mon Sep 17 00:00:00 2001
From: Yaman Umuroglu <maltanar@gmail.com>
Date: Fri, 1 May 2020 18:57:20 +0100
Subject: [PATCH] [HLSCustomOp] allow ops to produce extra HLS directives
---
src/finn/custom_op/fpgadataflow/__init__.py | 5 +++++
src/finn/custom_op/fpgadataflow/templates.py | 3 ++-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/src/finn/custom_op/fpgadataflow/__init__.py b/src/finn/custom_op/fpgadataflow/__init__.py
index 9a6f66087..4ef6f0212 100644
--- a/src/finn/custom_op/fpgadataflow/__init__.py
+++ b/src/finn/custom_op/fpgadataflow/__init__.py
@@ -194,6 +194,7 @@ class HLSCustomOp(CustomOp):
self.code_gen_dict["$FINNHLSLIBDIR$"] = ["/workspace/finn-hlslib"]
self.code_gen_dict["$TOPFXN$"] = [node.name]
self.code_gen_dict["$CLKPERIOD$"] = [str(clk)]
+ self.code_gen_dict["$EXTRA_DIRECTIVES$"] = self.ipgen_extra_directives()
template = self.ipgentcl_template
@@ -207,6 +208,10 @@ class HLSCustomOp(CustomOp):
f.close()
self.code_gen_dict.clear()
+ def ipgen_extra_directives(self):
+ "Return a list of extra tcl directives for HLS synthesis."
+ return []
+
def ipgen_singlenode_code(self):
"""Builds the bash script for ip generation using the IPGenBuilder from
finn.util.fpgadataflow."""
diff --git a/src/finn/custom_op/fpgadataflow/templates.py b/src/finn/custom_op/fpgadataflow/templates.py
index 6313bb79c..5f526aa2a 100644
--- a/src/finn/custom_op/fpgadataflow/templates.py
+++ b/src/finn/custom_op/fpgadataflow/templates.py
@@ -79,7 +79,7 @@ $DOCOMPUTE$
}
"""
-# tcl script
+# tcl script for IP generation
ipgentcl_template = """
set config_proj_name $PROJECTNAME$
puts "HLS project: $config_proj_name"
@@ -101,6 +101,7 @@ set_part $config_proj_part
config_interface -m_axi_addr64
config_rtl -auto_prefix
+$EXTRA_DIRECTIVES$
create_clock -period $config_clkperiod -name default
csynth_design
--
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