diff --git a/conifer/backends/boards/__init__.py b/conifer/backends/boards/__init__.py
index 52bc3f7..2428944 100644
--- a/conifer/backends/boards/__init__.py
+++ b/conifer/backends/boards/__init__.py
@@ -35,4 +35,23 @@ def get_board_config(name):
 def get_builder(project_config, board_config, **kwargs):
   builder = __builders.get(type(board_config), None)
   assert builder is not None, f'Could not find builder for {type(board_config)} from {list(__builders.keys())}'
-  return builder(project_config, board_config, **kwargs)
\ No newline at end of file
+  return builder(project_config, board_config, **kwargs)
+
+def register_board_config(name : str, config : BoardConfig):
+  '''
+  Register a new board for building accelerators
+
+  Parameters
+  ----------
+  name: str
+      Name of new board
+  config: BoardConfig
+      Configuration for new board
+  '''
+  if name in __configs.keys():
+    logger.error(f'board configuration with name "{name}" is already registered') 
+  else:
+    assert isinstance(config, BoardConfig), f'Expected BoardConfig object, got {type(config)}'
+    assert type(config) in __builders.keys(), f'Cannot get builder for {type(config)}, expected one of {__builders.keys()}'
+    logger.info('registering board "{name}"')
+    __configs[name] = config
\ No newline at end of file
diff --git a/conifer/backends/boards/boards.py b/conifer/backends/boards/boards.py
index 415b053..3f1116f 100644
--- a/conifer/backends/boards/boards.py
+++ b/conifer/backends/boards/boards.py
@@ -144,15 +144,21 @@ def get_export_format(self):
   def get_maxi64(self):
     return False
 
-  def build(self):
+  def build(self, vivado_opts=None):
     '''
     Build Zynq project
+
+    Parameters
+    ----------
+    vivado_opts: string (optional)
+      additional options to pass to vivado command
     '''
     self.write()
     cwd = os.getcwd()
     os.chdir(self.project_cfg.output_dir)
     success = True
-    cmd = 'vivado -mode batch -source build_bit.tcl > vivado_build.log'
+    vivado_opts = '' if vivado_opts is None else vivado_opts
+    cmd = f'vivado -mode batch -source build_bit.tcl {vivado_opts} > vivado_build.log'
     logger.info(f'Building Zynq bitfile with command "{cmd}"')
     success = success and os.system(cmd)==0
     os.chdir(cwd)
@@ -161,6 +167,7 @@ def build(self):
   def package(self, retry: int = 6, retries: int = 10):
     '''
     Collect build products and compress to a zip file
+
     Parameters
     ----------
     retry: int (optional)
@@ -233,13 +240,17 @@ def get_maxi64(self):
   def write(self):
     return
 
-  def build(self, target='hw'):
+  def build(self, target = 'hw', vitis_opts : str = None):
     '''
     Build Alveo project
+
     Parameters
     ----------
     target: string (optional)
       v++ target
+    
+    vitis_opts: string (optional)
+      additional options to pass to v++ command
     '''
     self.write()
     cwd = os.getcwd()
@@ -248,7 +259,8 @@ def build(self, target='hw'):
     os.chdir(od)
     success = True
     pn = pn
-    vitis_cmd = f'v++ -t {target} --platform {self.board_cfg.platform} --link {pn}/solution1/impl/export.xo -o {pn}.xclbin > vitis_build.log'
+    vitis_opts = '' if vitis_opts is None else vitis_opts
+    vitis_cmd = f'v++ -t {target} --platform {self.board_cfg.platform} --link {pn}/solution1/impl/export.xo -o {pn}.xclbin {vitis_opts} > vitis_build.log'
     logger.info(f'Building Alveo bitfile with command "{vitis_cmd}"')
     success = success and os.system(vitis_cmd)==0
     os.chdir(cwd)
diff --git a/conifer/backends/fpu/writer.py b/conifer/backends/fpu/writer.py
index 87bf8e5..35365e3 100644
--- a/conifer/backends/fpu/writer.py
+++ b/conifer/backends/fpu/writer.py
@@ -401,7 +401,7 @@ def write(self):
     self.write_params()
     self.write_tcl()
 
-  def build(self, csynth=True, bitfile=True):
+  def build(self, csynth=True, bitfile=True, **build_kwargs):
     '''
     Build FPU project
     Parameters
@@ -420,7 +420,7 @@ def build(self, csynth=True, bitfile=True):
       logger.info(f'Building FPU HLS with command "{cmd}"')
       success = success and os.system(cmd)==0
     if success and bitfile:
-      success = success and self.board_builder.build()
+      success = success and self.board_builder.build(**build_kwargs)
     os.chdir(cwd)
     return success
   
diff --git a/conifer/backends/xilinxhls/writer.py b/conifer/backends/xilinxhls/writer.py
index bcc9d10..0a41b57 100644
--- a/conifer/backends/xilinxhls/writer.py
+++ b/conifer/backends/xilinxhls/writer.py
@@ -545,7 +545,7 @@ def compile(self):
             os.chdir(curr_dir)
 
     @copydocstring(ModelBase.build)
-    def build(self, reset=False, csim=False, synth=True, cosim=False, export=False, vsynth=False, bitfile=False, package=False):
+    def build(self, reset=False, csim=False, synth=True, cosim=False, export=False, vsynth=False, bitfile=False, package=False, **bitfile_kwargs):
         cwd = os.getcwd()
         os.chdir(self.config.output_dir)
         
@@ -590,7 +590,7 @@ def build(self, reset=False, csim=False, synth=True, cosim=False, export=False,
                     logger.error('bitfile was requested but no accelerator_config found')
                     rval = False
                 else:
-                    rval = self.config.accelerator_builder.build()
+                    rval = self.config.accelerator_builder.build(**bitfile_kwargs)
                     if rval:
                         self.config.accelerator_builder.package()
         os.chdir(cwd)