Save top level attrs and store current step

common/nextpnr.h

@@ -550,6 +550,9 @@ struct BaseCtx
     // Floorplanning regions
     std::unordered_map<IdString, std::unique_ptr<Region>> region;
 
+    // Context meta data
+    std::unordered_map<IdString, Property> attrs;
+
     BaseCtx()
     {
         idstring_str_to_idx = new std::unordered_map<std::string, int>;

ecp5/arch.cc

@@ -524,6 +524,7 @@ bool Arch::place()
     }
 
     permute_luts();
+    getCtx()->attrs[getCtx()->id("step")] = "place";
     archInfoToAttributes();
     return true;
 }
@@ -560,6 +561,7 @@ bool Arch::route()
     log_info("       base %d adder %d\n", speed_grade->pip_classes[locInfo(slowest_pip)->pip_data[slowest_pip.index].timing_class].max_base_delay,
              speed_grade->pip_classes[locInfo(slowest_pip)->pip_data[slowest_pip.index].timing_class].max_fanout_adder);
 #endif
+    getCtx()->attrs[getCtx()->id("step")] = "route";
     archInfoToAttributes();
     return result;
 }

ecp5/pack.cc

@@ -2429,6 +2429,7 @@ bool Arch::pack()
         Ecp5Packer(ctx).pack();
         log_info("Checksum: 0x%08x\n", ctx->checksum());
         assignArchInfo();
+        ctx->attrs[ctx->id("step")] = "pack";
         archInfoToAttributes();
         return true;
     } catch (log_execution_error_exception) {

generic/arch.cc

@@ -496,13 +496,21 @@ bool Arch::place()
     std::string placer = str_or_default(settings, id("placer"), defaultPlacer);
     // FIXME: No HeAP because it needs a list of IO buffers
     if (placer == "sa") {
-        return placer1(getCtx(), Placer1Cfg(getCtx()));
+        bool retVal = placer1(getCtx(), Placer1Cfg(getCtx()));
+        getCtx()->attrs[getCtx()->id("step")] = "place";
+        archInfoToAttributes();
+        return retVal;
     } else {
         log_error("Generic architecture does not support placer '%s'\n", placer.c_str());
     }
 }
 
-bool Arch::route() { return router1(getCtx(), Router1Cfg(getCtx())); }
+bool Arch::route() { 
+    bool retVal = router1(getCtx(), Router1Cfg(getCtx()));
+    getCtx()->attrs[getCtx()->id("step")] = "route";
+    archInfoToAttributes();
+    return retVal;
+}
 
 // ---------------------------------------------------------------
 

generic/pack.cc

@@ -282,6 +282,7 @@ bool Arch::pack()
         pack_io(ctx);
         pack_lut_lutffs(ctx);
         pack_nonlut_ffs(ctx);
+        ctx->attrs[ctx->id("step")] = "pack";
         ctx->assignArchInfo();
         log_info("Checksum: 0x%08x\n", ctx->checksum());
         return true;

ice40/arch.cc

@@ -689,12 +689,14 @@ bool Arch::place()
         tocfg.cellTypes.insert(id_ICESTORM_LC);
         retVal = timing_opt(getCtx(), tocfg);
     }
+    getCtx()->attrs[getCtx()->id("step")] = "place";
     archInfoToAttributes();
     return retVal;
 }
 
 bool Arch::route() { 
     bool retVal = router1(getCtx(), Router1Cfg(getCtx())); 
+    getCtx()->attrs[getCtx()->id("step")] = "route";
     archInfoToAttributes();
     return retVal;
 }

ice40/pack.cc

@@ -1421,6 +1421,7 @@ bool Arch::pack()
         ctx->assignArchInfo();
         constrain_chains(ctx);
         ctx->assignArchInfo();
+        ctx->attrs[ctx->id("step")] = "pack";
         archInfoToAttributes();
         log_info("Checksum: 0x%08x\n", ctx->checksum());
         return true;

json/jsonparse.cc

@@ -355,6 +355,27 @@ void json_import_net_attrib(Context *ctx, string &modname, NetInfo *net, JsonNod
                  pId.c_str(ctx), net->attrs[pId].c_str(), net->name.c_str(ctx), modname.c_str());
 }
 
+void json_import_top_attrib(Context *ctx, string &modname, JsonNode *param_node,
+                             std::unordered_map<IdString, Property> *dest, int param_id)
+{
+    //
+    JsonNode *param;
+    IdString pId;
+    //
+    param = param_node->data_dict.at(param_node->data_dict_keys[param_id]);
+
+    pId = ctx->id(param_node->data_dict_keys[param_id]);
+    if (param->type == 'N') {
+        (*dest)[pId].setNumber(param->data_number);
+    } else if (param->type == 'S')
+        (*dest)[pId].setString(param->data_string);
+    else
+        log_error("JSON parameter type of \"%s\' of module not supported\n", pId.c_str(ctx));
+    if (json_debug)
+        log_info("    Added parameter \'%s\'=%s module \'%s\'\n",
+                 pId.c_str(ctx), (*dest)[pId].c_str(), modname.c_str());
+}
+
 static int const_net_idx = 0;
 
 template <typename F>
@@ -714,6 +735,13 @@ void json_import(Context *ctx, string modname, JsonNode *node)
         return;
 
     log_info("Importing module %s\n", modname.c_str());
+    ctx->attrs[ctx->id("module")] = modname;
+    JsonNode *attr_node = node->data_dict.at("attributes");
+    for (int attrid = 0; attrid < GetSize(attr_node->data_dict_keys); attrid++) {
+        json_import_top_attrib(ctx, modname, attr_node, &ctx->attrs, attrid);
+    }
+    if (ctx->attrs.find(ctx->id("step")) == ctx->attrs.end())   
+        ctx->attrs[ctx->id("step")] = "synth";
     
     JsonNode *ports_parent = nullptr;
     if (node->data_dict.count("ports") > 0)

json/jsonwrite.cc

@@ -64,13 +64,17 @@ void write_parameters(std::ostream &f, Context *ctx, const std::unordered_map<Id
 
 void write_module(std::ostream &f, Context *ctx)
 {
+    auto val = ctx->attrs.find(ctx->id("module"));
+    if (val != ctx->attrs.end())    
+        f << stringf("    %s: {\n", get_string(val->second.str).c_str());
+    else
         f << stringf("    %s: {\n", get_string("top").c_str());
     // TODO: check if this is better to be separate
     /*f << stringf("      \"settings\": {");
     write_parameters(f, ctx, ctx->settings, true);
     f << stringf("\n      },\n");*/
     f << stringf("      \"attributes\": {");
-    // TODO: Top level attributes
+    write_parameters(f, ctx, ctx->attrs, true);
     f << stringf("\n      },\n");
     f << stringf("      \"ports\": {");
     // TODO: Top level ports