Added FFT Generator integration

.gitmodules

@@ -131,3 +131,6 @@
 [submodule "generators/ibex"]
 	path = generators/ibex
 	url = https://github.com/ucb-bar/ibex-wrapper
+[submodule "generators/FFTGenerator"]
+	path = generators/FFTGenerator
+	url = git@github.com:AnimeshAgrawal/FFTGenerator.git

build.sbt

@@ -164,7 +164,12 @@ lazy val chipyard = (project in file("generators/chipyard"))
   .dependsOn(testchipip, rocketchip, boom, hwacha, sifive_blocks, sifive_cache, iocell,
     sha3, // On separate line to allow for cleaner tutorial-setup patches
     dsptools, `rocket-dsp-utils`,
-    gemmini, icenet, tracegen, cva6, nvdla, sodor, ibex)
+    gemmini, icenet, tracegen, cva6, nvdla, sodor, ibex, FFTGenerator)
+  .settings(libraryDependencies ++= rocketLibDeps.value)
+  .settings(commonSettings)
+
+lazy val FFTGenerator = (project in file("generators/FFTGenerator"))
+  .dependsOn(rocketchip, `rocket-dsp-utils`)
   .settings(libraryDependencies ++= rocketLibDeps.value)
   .settings(commonSettings)
 

generators/chipyard/src/main/scala/DigitalTop.scala

@@ -32,6 +32,7 @@ class DigitalTop(implicit p: Parameters) extends ChipyardSystem
   with chipyard.example.CanHavePeripheryStreamingPassthrough // Enables optionally adding the DSPTools streaming-passthrough example widget
   with nvidia.blocks.dla.CanHavePeripheryNVDLA // Enables optionally having an NVDLA
   with chipyard.clocking.HasChipyardPRCI // Use Chipyard reset/clock distribution
+  with FFTGenerator.HasPeripheryFFT
 {
   override lazy val module = new DigitalTopModule(this)
 }

generators/chipyard/src/main/scala/config/RocketConfigs.scala

@@ -21,6 +21,12 @@ class TinyRocketConfig extends Config(
   new freechips.rocketchip.subsystem.With1TinyCore ++             // single tiny rocket-core
   new chipyard.config.AbstractConfig)
 
+class RocketWithFFT extends Config(
+  new FFTGenerator.WithFFTNumPoints(8) ++
+  new FFTGenerator.WithFFTBaseAddr(0x2000) ++
+  new FFTGenerator.WithFFTGenerator ++
+  new RocketConfig)
+
 class HwachaRocketConfig extends Config(
   new chipyard.config.WithHwachaTest ++
   new hwacha.DefaultHwachaConfig ++                              // use Hwacha vector accelerator