update frequency config fragements

generators/firechip/src/main/scala/TargetConfigs.scala

@@ -50,6 +50,7 @@ class WithScalaTestFeatures extends Config((site, here, up) => {
 
 // FASED Config Aliases. This to enable config generation via "_" concatenation
 // which requires that all config classes be defined in the same package
+class DDR3FCFS extends FCFS16GBQuadRank
 class DDR3FRFCFS extends FRFCFS16GBQuadRank
 class DDR3FRFCFSLLC4MB extends FRFCFS16GBQuadRankLLC4MB
 
@@ -83,50 +84,14 @@ class WithFireSimDesignTweaks extends Config(
   new chipyard.config.WithNoDebug
 )
 
-// Tweaks to modify target clock frequencies / crossings to firesim defaults
-class WithFireSimDefaultFrequencyTweaks extends Config(
-  // Optional: This sets the default frequency for all buses in the system to 2 GHz
-  // (since unspecified bus frequencies will use the pbus frequency)
-  new chipyard.config.WithPeripheryBusFrequency(2000.0) ++
-  // Optional: These three configs will put the system bus at a frequency of 1 GHz
-  // Which is more representative of on uncore working at a lower frequency than the tiles
-  new chipyard.config.WithSystemBusFrequency(1000.0) ++
-  new chipyard.config.WithSbusToCbusCrossingType(AsynchronousCrossing()) ++ // Add Async crossing between SBUS and CBUS
-  new chipyard.config.WithFbusToSbusCrossingType(AsynchronousCrossing()) ++ // Add Async crossing between FBUS and SBUS
-  // Optional: These three configs put the DRAM memory system in it's own clock domian.
-  // Removing the first config will result in the FASED timing model running
-  // at the pbus freq (above, 3.2 GHz), which is outside the range of valid DDR3 speedgrades.
-  // 1 GHz matches the FASED default, using some other frequency will require
-  // runnings the FASED runtime configuration generator to generate faithful DDR3 timing values.
-  new chipyard.config.WithMemoryBusFrequency(1000.0) ++
-  new chipyard.config.WithAsynchrousMemoryBusCrossing ++
-  new testchipip.WithAsynchronousSerialSlaveCrossing
-)
-
-// Tweaks to modify target clock frequencies / crossings to testchip defaults
-class WithFireSimTestchipFrequencyTweaks extends Config(
-  // Optional: This sets the default frequency for all buses in the system to 1 GHz
-  // (since unspecified bus frequencies will use the pbus frequency).
-  // This frequency is representative of Rocket/BOOM-based test chips
-  new chipyard.config.WithPeripheryBusFrequency(1000.0) ++
-  // Optional: These three configs put the DRAM memory system in it's own clock domian.
-  // Removing the first config will result in the FASED timing model running
-  // at the pbus freq (above, 3.2 GHz), which is outside the range of valid DDR3 speedgrades.
-  // 1 GHz matches the FASED default, using some other frequency will require
-  // runnings the FASED runtime configuration generator to generate faithful DDR3 timing values.
-  new chipyard.config.WithMemoryBusFrequency(1000.0) ++
-  new chipyard.config.WithAsynchrousMemoryBusCrossing ++
-  new testchipip.WithAsynchronousSerialSlaveCrossing
-)
-
 // Tweaks to modify target clock frequencies / crossings to legacy firesim defaults
-class WithFireSimHighPerfFrequencyTweaks extends Config(
+class WithFireSimHighPerfClocking extends Config(
   // Optional: This sets the default frequency for all buses in the system to 3.2 GHz
   // (since unspecified bus frequencies will use the pbus frequency)
   // This frequency selection matches FireSim's legacy selection and is required
   // to support 200Gb NIC performance. You may select a smaller value.
   new chipyard.config.WithPeripheryBusFrequency(3200.0) ++
-  // Optional: These three configs put the DRAM memory system in it's own clock domian.
+  // Optional: These three configs put the DRAM memory system in it's own clock domain.
   // Removing the first config will result in the FASED timing model running
   // at the pbus freq (above, 3.2 GHz), which is outside the range of valid DDR3 speedgrades.
   // 1 GHz matches the FASED default, using some other frequency will require
@@ -136,21 +101,24 @@ class WithFireSimHighPerfFrequencyTweaks extends Config(
   new testchipip.WithAsynchronousSerialSlaveCrossing
 )
 
-// Tweaks that are generally applied to all firesim configs
+// Tweaks that are generally applied to all firesim configs setting a single clock domain at 1000 MHz
 class WithFireSimConfigTweaks extends Config(
-  new WithFireSimDefaultFrequencyTweaks ++
+  // 1 GHz matches the FASED default, using some other frequency will require
+  // runnings the FASED runtime configuration generator to generate faithful DDR3 timing values.
+  new chipyard.config.WithSystemBusFrequency(1000.0) ++
+  new chipyard.config.WithSystemBusFrequencyAsDefault ++ // All unspecified clock frequencies, notably the implicit clock, will use the sbus freq (1000 MHz)
   new WithFireSimDesignTweaks
 )
 
 // Tweak more representative of testchip configs
-class WithFireSimTestchipConfigTweaks extends Config(
-  new WithFireSimTestchipFrequencyTweaks ++
+class WithFireSimTestChipConfigTweaks extends Config(
+  new chipyard.config.WithTestChipBusFreqs ++
   new WithFireSimDesignTweaks
 )
 
 // Tweaks for legacy FireSim configs.
 class WithFireSimHighPerfConfigTweaks extends Config(
-  new WithFireSimHighPerfFrequencyTweaks ++
+  new WithFireSimHighPerfClocking ++
   new WithFireSimDesignTweaks
 )
 
@@ -254,11 +222,6 @@ class FireSimCVA6Config extends Config(
 //**********************************************************************************
 //* Multiclock Configurations
 //*********************************************************************************/
-class FireSimMulticlockRocketConfig extends Config(
-  new chipyard.config.WithTileFrequency(6000.0) ++ //lol
-  new freechips.rocketchip.subsystem.WithRationalRocketTiles ++   // Add rational crossings between RocketTile and uncore
-  new FireSimRocketConfig)
-
 class FireSimMulticlockAXIOverSerialConfig extends Config(
   new WithAXIOverSerialTLCombinedBridges ++ // use combined bridge to connect to axi mem over serial
   new WithDefaultFireSimBridges ++