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frontend: Support for loading settings and nextpnr state

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2019-11-22 17:29:45 +00:00
parent 28279b18fe
commit 14b18cb6fa
2 changed files with 27 additions and 1 deletions
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18
frontend/frontend_base.h
View File

@ -76,6 +76,10 @@
* calls Func(const std::string &name, const Property &value);
* for each parameter of a cell
*
* void foreach_setting(const ModuleDataType &obj, Func) const;
* calls Func(const std::string &name, const Property &value);
* for each module-level setting
*
* void foreach_port_dir(const CellDataType &cell, Func) const;
* calls Func(const std::string &name, PortType dir);
* for each port direction of a cell
@ -261,11 +265,23 @@ template <typename FrontendType> struct GenericFrontend
// Just create a list of ports for netname resolution
impl.foreach_port(data,
[&](const std::string &name, const mod_port_dat_t &) { m.port_to_bus[ctx->id(name)]; });
// Import module-level attributes
impl.foreach_attr(
data, [&](const std::string &name, const Property &value) { ctx->attrs[ctx->id(name)] = value; });
// Import settings
impl.foreach_setting(data, [&](const std::string &name, const Property &value) {
ctx->settings[ctx->id(name)] = value;
});
}
import_module_netnames(m, data);
import_module_cells(m, data);
if (m.is_toplevel)
if (m.is_toplevel) {
import_toplevel_ports(m, data);
// Mark design as loaded through nextpnr
ctx->settings[ctx->id("synth")] = 1;
// Process nextpnr-specific attributes
ctx->attributesToArchInfo();
}
}
// Multiple labels might refer to the same net. Resolve conflicts for the primary name thus:

10
frontend/json_frontend.cc
View File

@ -134,6 +134,16 @@ struct JsonFrontendImpl
}
}
template <typename TFunc> void foreach_setting(const Json &obj, TFunc Func) const
{
const auto &settings = obj["settings"];
if (settings.is_null())
return;
for (const auto &setting : settings.object_items()) {
Func(setting.first, parse_property(setting.second));
}
}
template <typename TFunc> void foreach_port_dir(const CellDataType &cell, TFunc Func) const
{
for (const auto &pdir : cell["port_directions"].object_items())