diff --git a/.github/scripts/defaults.sh b/.github/scripts/defaults.sh
index 7d38e5f9..e6671996 100755
--- a/.github/scripts/defaults.sh
+++ b/.github/scripts/defaults.sh
@@ -25,7 +25,7 @@ LOCAL_FIRESIM_DIR=$LOCAL_CHIPYARD_DIR/sims/firesim/sim
 
 # key value store to get the build groups
 declare -A grouping
-grouping["group-cores"]="chipyard-cva6 chipyard-ibex chipyard-rocket chipyard-hetero chipyard-boom chipyard-sodor chipyard-digitaltop chipyard-multiclock-rocket chipyard-nomem-scratchpad chipyard-spike"
+grouping["group-cores"]="chipyard-cva6 chipyard-ibex chipyard-rocket chipyard-hetero chipyard-boom chipyard-sodor chipyard-digitaltop chipyard-multiclock-rocket chipyard-nomem-scratchpad chipyard-spike chipyard-clone"
 grouping["group-peripherals"]="chipyard-dmirocket chipyard-blkdev chipyard-spiflashread chipyard-spiflashwrite chipyard-mmios chipyard-lbwif"
 grouping["group-accels"]="chipyard-fftgenerator chipyard-nvdla chipyard-mempress chipyard-sha3 chipyard-hwacha chipyard-gemmini chipyard-streaming-fir chipyard-streaming-passthrough"
 grouping["group-constellation"]="chipyard-constellation"
@@ -54,6 +54,7 @@ mapping["chipyard-ibex"]=" CONFIG=IbexConfig"
 mapping["chipyard-spiflashread"]=" CONFIG=LargeSPIFlashROMRocketConfig"
 mapping["chipyard-spiflashwrite"]=" CONFIG=SmallSPIFlashRocketConfig"
 mapping["chipyard-mmios"]=" CONFIG=MMIORocketConfig verilog"
+mapping["chipyard-cloneboom"]=" CONFIG=Cloned64MegaBoomConfig verilog"
 mapping["tracegen"]=" CONFIG=NonBlockingTraceGenL2Config"
 mapping["tracegen-boom"]=" CONFIG=BoomTraceGenConfig"
 mapping["chipyard-nvdla"]=" CONFIG=SmallNVDLARocketConfig"
diff --git a/generators/boom b/generators/boom
index 0a887434..98487c68 160000
--- a/generators/boom
+++ b/generators/boom
@@ -1 +1 @@
-Subproject commit 0a887434abcbfa6ef3e4a5a8bbfbc5fcfd062462
+Subproject commit 98487c68cc4229cd991eac6a4f94d2fe8e5fdc1d
diff --git a/generators/chipyard/src/main/scala/Subsystem.scala b/generators/chipyard/src/main/scala/Subsystem.scala
index 45b62115..703b404e 100644
--- a/generators/chipyard/src/main/scala/Subsystem.scala
+++ b/generators/chipyard/src/main/scala/Subsystem.scala
@@ -77,8 +77,6 @@ class ChipyardSubsystem(implicit p: Parameters) extends BaseSubsystem
 class ChipyardSubsystemModuleImp[+L <: ChipyardSubsystem](_outer: L) extends BaseSubsystemModuleImp(_outer)
   with HasTilesModuleImp
 {
-  // create file with core params
-  ElaborationArtefacts.add("""core.config""", outer.tiles.map(x => x.module.toString).mkString("\n"))
   // Generate C header with relevant information for Dromajo
   // This is included in the `dromajo_params.h` header file
   DromajoHelper.addArtefacts(InSubsystem)
diff --git a/generators/chipyard/src/main/scala/config/BoomConfigs.scala b/generators/chipyard/src/main/scala/config/BoomConfigs.scala
index aced79ae..bbc816f7 100644
--- a/generators/chipyard/src/main/scala/config/BoomConfigs.scala
+++ b/generators/chipyard/src/main/scala/config/BoomConfigs.scala
@@ -28,6 +28,12 @@ class DualSmallBoomConfig extends Config(
   new boom.common.WithNSmallBooms(2) ++                          // 2 boom cores
   new chipyard.config.AbstractConfig)
 
+class Cloned64MegaBoomConfig extends Config(
+  new boom.common.WithCloneBoomTiles(63, 0) ++
+  new boom.common.WithNMegaBooms(1) ++                           // mega boom config
+  new chipyard.config.WithSystemBusWidth(128) ++
+  new chipyard.config.AbstractConfig)
+
 class HwachaLargeBoomConfig extends Config(
   new chipyard.config.WithHwachaTest ++
   new hwacha.DefaultHwachaConfig ++                              // use Hwacha vector accelerator
diff --git a/generators/chipyard/src/main/scala/config/RocketConfigs.scala b/generators/chipyard/src/main/scala/config/RocketConfigs.scala
index 1a3ac0ed..d5993195 100644
--- a/generators/chipyard/src/main/scala/config/RocketConfigs.scala
+++ b/generators/chipyard/src/main/scala/config/RocketConfigs.scala
@@ -122,6 +122,11 @@ class QuadRocketConfig extends Config(
   new freechips.rocketchip.subsystem.WithNBigCores(4) ++    // quad-core (4 RocketTiles)
   new chipyard.config.AbstractConfig)
 
+class Cloned64RocketConfig extends Config(
+  new freechips.rocketchip.subsystem.WithCloneRocketTiles(63, 0) ++ // copy tile0 63 more times
+  new freechips.rocketchip.subsystem.WithNBigCores(1) ++            // tile0 is a BigRocket
+  new chipyard.config.AbstractConfig)
+
 class RV32RocketConfig extends Config(
   new freechips.rocketchip.subsystem.WithRV32 ++            // set RocketTiles to be 32-bit
   new freechips.rocketchip.subsystem.WithNBigCores(1) ++