From 3be76a837d20fb81814067cebdd45f482cbcbb33 Mon Sep 17 00:00:00 2001
From: Miodrag Milanovic <mmicko@gmail.com>
Date: Wed, 8 Jul 2020 13:22:59 +0200
Subject: Support 4K parts directly

---
 ice40/arch.cc | 27 ++++++++++++++++++++++-----
 ice40/arch.h  |  1 +
 ice40/main.cc | 10 ++++++++++
 3 files changed, 33 insertions(+), 5 deletions(-)

(limited to 'ice40')

diff --git a/ice40/arch.cc b/ice40/arch.cc
index be346fd7..b20245fc 100644
--- a/ice40/arch.cc
+++ b/ice40/arch.cc
@@ -55,7 +55,7 @@ static const ChipInfoPOD *get_chip_info(ArchArgs::ArchArgsTypes chip)
         chipdb = "ice40/chipdb-u4k.bin";
     } else if (chip == ArchArgs::UP5K) {
         chipdb = "ice40/chipdb-5k.bin";
-    } else if (chip == ArchArgs::LP8K || chip == ArchArgs::HX8K) {
+    } else if (chip == ArchArgs::LP8K || chip == ArchArgs::HX8K || chip == ArchArgs::HX4K) {
         chipdb = "ice40/chipdb-8k.bin";
     } else {
         log_error("Unknown chip\n");
@@ -73,8 +73,17 @@ std::vector<std::string> Arch::getSupportedPackages(ArchArgs::ArchArgsTypes chip
 {
     const ChipInfoPOD *chip_info = get_chip_info(chip);
     std::vector<std::string> packages;
-    for (int i = 0; i < chip_info->num_packages; i++)
-        packages.push_back(chip_info->packages_data[i].name.get());
+    for (int i = 0; i < chip_info->num_packages; i++) {
+       std::string name = chip_info->packages_data[i].name.get();
+       if (chip == ArchArgs::HX4K)
+       {
+           if (name.find(":4k") != std::string::npos)
+               name = name.substr(0, name.size()-3);
+           else 
+               continue;
+       }
+       packages.push_back(name);
+    }
     return packages;
 }
 
@@ -82,15 +91,19 @@ std::vector<std::string> Arch::getSupportedPackages(ArchArgs::ArchArgsTypes chip
 
 Arch::Arch(ArchArgs args) : args(args)
 {
-    fast_part = (args.type == ArchArgs::HX8K || args.type == ArchArgs::HX1K);
+    fast_part = (args.type == ArchArgs::HX8K || args.type == ArchArgs::HX4K || args.type == ArchArgs::HX1K);
 
     chip_info = get_chip_info(args.type);
     if (chip_info == nullptr)
         log_error("Unsupported iCE40 chip type.\n");
 
     package_info = nullptr;
+    std::string package_name = args.package;
+    if (args.type == ArchArgs::HX4K)
+        package_name += ":4k";
+
     for (int i = 0; i < chip_info->num_packages; i++) {
-        if (chip_info->packages_data[i].name.get() == args.package) {
+        if (chip_info->packages_data[i].name.get() == package_name) {
             package_info = &(chip_info->packages_data[i]);
             break;
         }
@@ -121,6 +134,8 @@ std::string Arch::getChipName() const
         return "Lattice U4K";
     } else if (args.type == ArchArgs::LP8K) {
         return "Lattice LP8K";
+    } else if (args.type == ArchArgs::HX4K) {
+        return "Lattice HX4K";
     } else if (args.type == ArchArgs::HX8K) {
         return "Lattice HX8K";
     } else {
@@ -144,6 +159,8 @@ IdString Arch::archArgsToId(ArchArgs args) const
         return id("u4k");
     if (args.type == ArchArgs::LP8K)
         return id("lp8k");
+    if (args.type == ArchArgs::HX4K)
+        return id("hx4k");
     if (args.type == ArchArgs::HX8K)
         return id("hx8k");
     return IdString();
diff --git a/ice40/arch.h b/ice40/arch.h
index 0d8e7d76..9197dcd2 100644
--- a/ice40/arch.h
+++ b/ice40/arch.h
@@ -387,6 +387,7 @@ struct ArchArgs
         LP1K,
         LP8K,
         HX1K,
+        HX4K,
         HX8K,
         UP5K,
         U4K
diff --git a/ice40/main.cc b/ice40/main.cc
index 497d580b..fedd0918 100644
--- a/ice40/main.cc
+++ b/ice40/main.cc
@@ -59,6 +59,8 @@ po::options_description Ice40CommandHandler::getArchOptions()
     if (Arch::isAvailable(ArchArgs::HX1K))
         specific.add_options()("hx1k", "set device type to iCE40HX1K");
     if (Arch::isAvailable(ArchArgs::HX8K))
+        specific.add_options()("hx4k", "set device type to iCE40HX4K");
+    if (Arch::isAvailable(ArchArgs::HX4K))
         specific.add_options()("hx8k", "set device type to iCE40HX8K");
     if (Arch::isAvailable(ArchArgs::UP5K))
         specific.add_options()("up5k", "set device type to iCE40UP5K");
@@ -142,6 +144,11 @@ std::unique_ptr<Context> Ice40CommandHandler::createContext(std::unordered_map<s
         chipArgs.package = "tq144";
     }
 
+    if (vm.count("hx4k")) {
+        chipArgs.type = ArchArgs::HX4K;
+        chipArgs.package = "tq144";
+    }
+
     if (vm.count("hx8k")) {
         chipArgs.type = ArchArgs::HX8K;
         chipArgs.package = "ct256";
@@ -185,6 +192,9 @@ std::unique_ptr<Context> Ice40CommandHandler::createContext(std::unordered_map<s
         if (arch_type == "hx1k") {
             chipArgs.type = ArchArgs::HX1K;
         }
+        if (arch_type == "hx4k") {
+            chipArgs.type = ArchArgs::HX4K;
+        }
         if (arch_type == "hx8k") {
             chipArgs.type = ArchArgs::HX8K;
         }
-- 
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