From 550310e2647c7aac1e49b79d9ff912436103062f Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Wed, 1 Jan 2020 12:30:00 +0000
Subject: Harmonize BRAM/LUTRAM descriptions across all of Yosys.
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This commit:
  * renames all remaining instances of "DRAM" (which is ambiguous)
    to "LUTRAM" (which is not), finishing the work started in
    the commit 698ab9be;
  * renames memory rule files to brams.txt/lutrams.txt;
  * adds/renames script labels map_bram/map_lutram;
  * extracts where necessary script labels map_ffram and map_gates;
  * adds where necessary options -nobram/-nolutram.

The end result is that BRAM/LUTRAM/FFRAM aspects of every target
are now consistent with each other.

Per architecture:
  * anlogic: rename drams.txt→lutrams.txt, add -nolutram, add
    :map_lutram, :map_ffram, :map_gates
  * ecp5: rename bram.txt→brams.txt, lutram.txt→lutrams.txt
  * efinix: rename bram.txt→brams.txt, add -nobram, add :map_ffram,
    :map_gates
  * gowin: rename bram.txt→brams.txt, dram.txt→lutrams.txt,
    rename -nodram→-nolutram (-nodram still recognized), rename
    :bram→:map_bram, :dram→:map_lutram, add :map_ffram, :map_gates
---
 techlibs/gowin/lutrams.txt | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 techlibs/gowin/lutrams.txt

(limited to 'techlibs/gowin/lutrams.txt')

diff --git a/techlibs/gowin/lutrams.txt b/techlibs/gowin/lutrams.txt
new file mode 100644
index 000000000..9db530251
--- /dev/null
+++ b/techlibs/gowin/lutrams.txt
@@ -0,0 +1,17 @@
+bram $__GW1NR_RAM16S4
+  init 1
+  abits 4
+  dbits 4
+  groups 2
+  ports  1 1
+  wrmode 0 1
+  enable 0 1
+  transp 0 1
+  clocks 0 1
+  clkpol 0 1
+endbram
+
+match $__GW1NR_RAM16S4
+  make_outreg
+  min wports 1
+endmatch
-- 
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