ecp5: Adding a slow and conservative placement validity checker

Signed-off-by: David Shah <davey1576@gmail.com>

1 files changed, 12 insertions, 7 deletions

diff --git a/ecp5/arch.cc b/ecp5/arch.cc
index cdffad69..0ffede3b 100644
--- a/ecp5/arch.cc
+++ b/ecp5/arch.cc
@@ -118,6 +118,14 @@ Arch::Arch(ArchArgs args) : args(args)
         log_error("Unsupported ECP5 chip type.\n");
     }
 #endif
+
+    id_trellis_slice = id("TRELLIS_SLICE");
+    id_clk = id("CLK");
+    id_lsr = id("LSR");
+    id_clkmux = id("CLKMUX");
+    id_lsrmux = id("LSRMUX");
+    id_srmode = id("SRMODE");
+    id_mode = id("MODE");
 }
 
 // -----------------------------------------------------------------------
@@ -181,7 +189,10 @@ BelRange Arch::getBelsAtSameTile(BelId bel) const
     br.b.cursor_tile = bel.location.y * chip_info->width + bel.location.x;
     br.e.cursor_tile = bel.location.y * chip_info->width + bel.location.x;
     br.b.cursor_index = 0;
-    br.e.cursor_index = locInfo(bel)->num_bels;
+    br.e.cursor_index = locInfo(bel)->num_bels - 1;
+    br.b.chip = chip_info;
+    br.e.chip = chip_info;
+    ++br.e;
     return br;
 }
 
@@ -315,12 +326,6 @@ DecalXY Arch::getGroupDecal(GroupId pip) const { return {}; };
 
 // -----------------------------------------------------------------------
 
-bool Arch::isValidBelForCell(CellInfo *cell, BelId bel) const { return true; }
-
-bool Arch::isBelLocationValid(BelId bel) const { return true; }
-
-// -----------------------------------------------------------------------
-
 bool Arch::getCellDelay(const CellInfo *cell, IdString fromPort, IdString toPort, delay_t &delay) const
 {
     return false;