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ecp5: Allow selection of device speed grade

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2018-11-16 10:24:00 +00:00
parent ffe1166e33
commit 19cc284b8c
1 changed files with 26 additions and 3 deletions
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29
ecp5/main.cc
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@ -59,6 +59,8 @@ po::options_description ECP5CommandHandler::getArchOptions()
specific.add_options()("um5g-85k", "set device type to LFE5UM5G-85F");
specific.add_options()("package", po::value<std::string>(), "select device package (defaults to CABGA381)");
specific.add_options()("speed", po::value<int>(), "select device speedgrade (6, 7 or 8)");
specific.add_options()("basecfg", po::value<std::string>(), "base chip configuration in Trellis text format");
specific.add_options()("textcfg", po::value<std::string>(), "textual configuration in Trellis format to write");
@ -112,10 +114,31 @@ std::unique_ptr<Context> ECP5CommandHandler::createContext()
else
chipArgs.package = "CABGA381";
if (chipArgs.type == ArchArgs::LFE5UM5G_25F || chipArgs.type == ArchArgs::LFE5UM5G_45F ||
chipArgs.type == ArchArgs::LFE5UM5G_85F)
chipArgs.type == ArchArgs::LFE5UM5G_85F) {
if (vm.count("speed") && vm["speed"].as<int>() != 8)
log_error("Only speed grade 8 is available for 5G parts\n");
chipArgs.speed = ArchArgs::SPEED_8_5G;
else
chipArgs.speed = ArchArgs::SPEED_6;
} else {
if (vm.count("speed")) {
int speed = vm["speed"].as<int>();
switch (speed) {
case 6:
chipArgs.speed = ArchArgs::SPEED_6;
break;
case 7:
chipArgs.speed = ArchArgs::SPEED_7;
break;
case 8:
chipArgs.speed = ArchArgs::SPEED_8;
break;
default:
log_error("Unsupported speed grade '%d'\n", speed);
}
} else {
chipArgs.speed = ArchArgs::SPEED_6;
}
}
return std::unique_ptr<Context>(new Context(chipArgs));
}