mistral: Implement some misc. things

Signed-off-by: gatecat <gatecat@ds0.me>

1 files changed, 37 insertions, 0 deletions

diff --git a/mistral/globals.cc b/mistral/globals.cc
new file mode 100644
index 00000000..34e569d3
--- /dev/null
+++ b/mistral/globals.cc
@@ -0,0 +1,37 @@
+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2021  gatecat <gatecat@ds0.me>
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include "log.h"
+#include "nextpnr.h"
+#include "util.h"
+
+NEXTPNR_NAMESPACE_BEGIN
+
+void Arch::create_clkbuf(int x, int y)
+{
+    for (int z = 0; z < 4; z++) {
+        // For now we only consider the input path from general routing, other inputs like dedicated clock pins are
+        // still a TODO
+        BelId bel = add_bel(x, y, id(stringf("CLKBUF[%d]", z)), id_MISTRAL_CLKBUF);
+        add_bel_pin(bel, id_A, PORT_IN, get_port(CycloneV::CMUXHG, x, y, -1, CycloneV::CLKIN, z));
+        add_bel_pin(bel, id_Q, PORT_OUT, get_port(CycloneV::CMUXHG, x, y, z, CycloneV::CLKOUT));
+    }
+}
+
+NEXTPNR_NAMESPACE_END