synth_xilinx: Initial Spartan 6 block RAM inference support.

1 files changed, 16 insertions, 0 deletions

diff --git a/techlibs/xilinx/brams_init.py b/techlibs/xilinx/brams_init.py
index d46a2b4f7..10057a0cb 100644
--- a/techlibs/xilinx/brams_init.py
+++ b/techlibs/xilinx/brams_init.py
@@ -1,5 +1,17 @@
 #!/usr/bin/env python3
 
+with open("techlibs/xilinx/brams_init_9.vh", "w") as f:
+    for i in range(4):
+        init_snippets = [" INIT[%3d*9+8]" % (k+256*i,) for k in range(255, -1, -1)]
+        for k in range(4, 256, 4):
+            init_snippets[k] = "\n           " + init_snippets[k]
+        print(".INITP_%02X({%s})," % (i, ",".join(init_snippets)), file=f)
+    for i in range(32):
+        init_snippets = [" INIT[%3d*9 +: 8]" % (k+32*i,) for k in range(31, -1, -1)]
+        for k in range(4, 32, 4):
+            init_snippets[k] = "\n          " + init_snippets[k]
+        print(".INIT_%02X({%s})," % (i, ",".join(init_snippets)), file=f)
+
 with open("techlibs/xilinx/brams_init_18.vh", "w") as f:
     for i in range(8):
         init_snippets = [" INIT[%3d*9+8]" % (k+256*i,) for k in range(255, -1, -1)]
@@ -24,6 +36,10 @@ with open("techlibs/xilinx/brams_init_36.vh", "w") as f:
             init_snippets[k] = "\n          " + init_snippets[k]
         print(".INIT_%02X({%s})," % (i, ",".join(init_snippets)), file=f)
 
+with open("techlibs/xilinx/brams_init_8.vh", "w") as f:
+    for i in range(32):
+        print(".INIT_%02X(INIT[%3d*256 +: 256])," % (i, i), file=f)
+
 with open("techlibs/xilinx/brams_init_16.vh", "w") as f:
     for i in range(64):
         print(".INIT_%02X(INIT[%3d*256 +: 256])," % (i, i), file=f)