ecp5: Adding ancillary DCU bels

Signed-off-by: David Shah <dave@ds0.me>

1 files changed, 17 insertions, 0 deletions

diff --git a/ecp5/bitstream.cc b/ecp5/bitstream.cc
index 00486e39..2df0ed0b 100644
--- a/ecp5/bitstream.cc
+++ b/ecp5/bitstream.cc
@@ -514,6 +514,12 @@ static std::vector<bool> parse_config_str(std::string str, int length)
         for (int i = 0; i < length; i++)
             if (value & (1 << i))
                 word.at(i) = true;
+    } else {
+        NPNR_ASSERT(length < 64);
+        unsigned long long value = std::stoull(str);
+        for (int i = 0; i < length; i++)
+            if (value & (1 << i))
+                word.at(i) = true;
     }
     return word;
 }
@@ -1078,6 +1084,17 @@ void write_bitstream(Context *ctx, std::string base_config_file, std::string tex
 #include "dcu_bitstream.h"
             cc.tilegroups.push_back(tg);
             tieoff_dcu_ports(ctx, cc, ci);
+        } else if (ci->type == id_EXTREFB) {
+            TileGroup tg;
+            tg.tiles = get_dcu_tiles(ctx, ci->bel);
+            tg.config.add_word("EXTREF.REFCK_DCBIAS_EN", parse_config_str(str_or_default(ci->params, ctx->id("REFCK_DCBIAS_EN"), "0"), 1));
+            tg.config.add_word("EXTREF.REFCK_RTERM", parse_config_str(str_or_default(ci->params, ctx->id("REFCK_RTERM"), "0"), 1));
+            tg.config.add_word("EXTREF.REFCK_PWDNB", parse_config_str(str_or_default(ci->params, ctx->id("REFCK_PWDNB"), "0"), 1));
+            cc.tilegroups.push_back(tg);
+        } else if (ci->type == id_PCSCLKDIV) {
+            Loc loc = ctx->getBelLocation(ci->bel);
+            std::string tname = ctx->getTileByTypeAndLocation(loc.y+1, loc.x, "BMID_0H");
+            cc.tiles[tname].add_enum("PCSCLKDIV" + std::to_string(loc.z), str_or_default(ci->params, ctx->id("GSR"), "ENABLED"));
         } else {
             NPNR_ASSERT_FALSE("unsupported cell type");
         }