Providing support for Alveo boards

MANIFEST.in

@@ -4,3 +4,4 @@ graft example-prjs
 graft example-models
 graft test
 recursive-include hls4ml/templates *
+include hls4ml/backends/vivado_accelerator/supported_boards.json

hls4ml/backends/vivado_accelerator/supported_boards.json

@@ -10,5 +10,33 @@
     "tcl_scripts": { "axi_stream": "axi_stream_design.tcl"},
     "python_drivers": {"axi_stream":  "axi_stream_driver.py"},
     "c_drivers": {}
+  },
+  "alveo-u50": {
+    "part": "xcu50-fsvh2104-2-e",
+    "tcl_scripts": {"axi_stream": "axi_stream_design.tcl"},
+    "python_drivers": {"axi_stream": "axi_stream_driver.py"},
+    "krnl_rtl_srcs": {"axi_stream":  "krnl_rtl_src"},
+    "c_drivers": {}
+  },
+  "alveo-u250": {
+    "part": "xcu250-figd2104-2L-e",
+    "tcl_scripts": {"axi_stream": "axi_stream_design.tcl"},
+    "python_drivers": {"axi_stream": "axi_stream_driver.py"},
+    "krnl_rtl_srcs": {"axi_stream":  "krnl_rtl_src"},
+    "c_drivers": {}
+  },
+  "alveo-u200": {
+    "part": "xcu200-fsgd2104-2-e",
+    "tcl_scripts": {"axi_stream": "axi_stream_design.tcl"},
+    "python_drivers": {"axi_stream": "axi_stream_driver.py"},
+    "krnl_rtl_srcs": {"axi_stream":  "krnl_rtl_src"},
+    "c_drivers": {}
+  },
+  "alveo-u280": {
+    "part": "xcu280-fsvh2892-2L-e",
+    "tcl_scripts": {"axi_stream": "axi_stream_design.tcl"},
+    "python_drivers": {"axi_stream": "axi_stream_driver.py"},
+    "krnl_rtl_srcs": {"axi_stream":  "krnl_rtl_src"},
+    "c_drivers": {}
   }
-}
+}

hls4ml/backends/vivado_accelerator/vivado_accelerator_backend.py

@@ -12,20 +12,55 @@ def __init__(self):
     def build(self, model, reset=False, csim=True, synth=True, cosim=False, validation=False, export=False, vsynth=False, bitfile=False):
         # run the VivadoBackend build
         report = super().build(model, reset=reset, csim=csim, synth=synth, cosim=cosim, validation=validation, export=export, vsynth=vsynth)
+        # Get Config to view Board and Platform
+        from hls4ml.backends import VivadoAcceleratorConfig
+        vivado_accelerator_config=VivadoAcceleratorConfig(model.config, model.get_input_variables(),model.get_output_variables())
         # now make a bitfile
         if bitfile:
-            curr_dir = os.getcwd()
-            os.chdir(model.config.get_output_dir())
-            try:
-                os.system('vivado -mode batch -source design.tcl')
-            except:
-                print("Something went wrong, check the Vivado logs")
-            os.chdir(curr_dir)
+            if(vivado_accelerator_config.get_board().startswith('alveo')):
+                self.make_xclbin(model,vivado_accelerator_config.get_platform())       
+            else:
+                curr_dir = os.getcwd()
+                os.chdir(model.config.get_output_dir())
+                try:
+                    os.system('vivado -mode batch -source design.tcl')
+                except:
+                    print("Something went wrong, check the Vivado logs")
+                os.chdir(curr_dir)
 
         return parse_vivado_report(model.config.get_output_dir())
 
+    def make_xclbin(self,model, platform='xilinx_u250_xdma_201830_2'):
+        """
+
+        Parameters
+        ----------
+        - model : compiled and built hls_model.
+        - platform : development Target Platform, must be installed first. On the host machine is required only the
+                     deployment target platform, both can be found on the Getting Started section of the Alveo card.
+        """
+        curr_dir = os.getcwd()
+        abs_path_dir=os.path.abspath(model.config.get_output_dir())
+        os.chdir(abs_path_dir)
+        os.makedirs('xo_files', exist_ok=True)
+        try:
+            os.system('vivado -mode batch -source design.tcl')
+        except:
+            print("Something went wrong, check the Vivado logs")
+        project_name=model.config.get_project_name()
+        ip_repo_path = abs_path_dir + '/'+project_name+'_prj'+'/solution1/impl/ip'
+        os.makedirs('xclbin_files', exist_ok=True)
+        os.chdir(abs_path_dir + '/xclbin_files')
+        # TODO Add other platforms
+        vitis_cmd = "v++ -t hw --platform " + platform + " --link ../xo_files/"+project_name+"_kernel.xo -o'"+project_name+"_kernel.xclbin' --user_ip_repo_paths " + ip_repo_path
+        try:
+            os.system(vitis_cmd)
+        except:
+            print("Something went wrong, check the Vitis/Vivado logs")
+        os.chdir(curr_dir)
+
     def create_initial_config(self, board='pynq-z2', part=None, clock_period=5, io_type='io_parallel', interface='axi_stream',
-                              driver='python', input_type='float', output_type='float'):
+                              driver='python', input_type='float', output_type='float',platform='xilinx_u250_xdma_201830_2'):
         '''
         Create initial accelerator config with default parameters
         Args:
@@ -42,6 +77,7 @@ def create_initial_config(self, board='pynq-z2', part=None, clock_period=5, io_t
                              will round the number of bits used to the next power-of-2 value.
             output_type: the wrapper output precision. Can be `float` or an `ap_type`. Note:
                               VivadoAcceleratorBackend will round the number of bits used to the next power-of-2 value.
+            platform: development target platform 
 
         Returns:
             populated config
@@ -57,6 +93,9 @@ def create_initial_config(self, board='pynq-z2', part=None, clock_period=5, io_t
         config['AcceleratorConfig']['Precision']['Output'] = {}
         config['AcceleratorConfig']['Precision']['Input'] = input_type  # float, double or ap_fixed<a,b>
         config['AcceleratorConfig']['Precision']['Output'] = output_type  # float, double or ap_fixed<a,b>
+        if board.startswith('alveo'):
+            config['AcceleratorConfig']['Platform'] = platform  
+
         return config
 
     def _register_flows(self):

hls4ml/backends/vivado_accelerator/vivado_accelerator_config.py

@@ -47,6 +47,7 @@ def __init__(self, config, model_inputs, model_outputs):
                                                                             'float')  # float, double or ap_fixed<a,b>
         self.output_type = self.config['AcceleratorConfig']['Precision'].get('Output',
                                                                              'float')  # float, double or ap_fixed<a,b>
+        self.platform= self.config['AcceleratorConfig'].get('Platform', 'xilinx_u250_xdma_201830_2') # Get platform folder name
 
         assert len(
             model_inputs) == 1, "Only models with one input tensor are currently supported by VivadoAcceleratorBackend"
@@ -118,14 +119,28 @@ def get_driver(self):
     def get_board(self):
         return self.board
 
+    def get_platform(self):
+        return self.platform
+
+    def get_clock_period(self):
+        return self.clock_period
+
     def get_driver_path(self):
-        return '../templates/vivado_accelerator/' + self.board + '/' + self.driver + '_drivers/' + \
+        if  self.board.startswith('alveo'):
+            return '../templates/vivado_accelerator/' + 'alveo/' + self.driver + '_drivers/' + \
+               self.get_driver_file()
+        else:
+            return '../templates/vivado_accelerator/' + self.board + '/' + self.driver + '_drivers/' + \
                self.get_driver_file()
 
     def get_driver_file(self):
         driver_ext = '.py' if self.driver == 'python' else '.h'
         return self.interface + '_driver' + driver_ext
 
+    def get_krnl_rtl_src_dir(self):
+        return '../templates/vivado_accelerator/' + 'alveo/' + '/krnl_rtl_src'
+
+
     def get_input_type(self):
         return self.input_type
 
@@ -140,4 +155,8 @@ def get_tcl_file_path(self):
         tcl_script = tcl_scripts.get(self.interface, None)
         if tcl_script is None:
             raise Exception('No tcl script definition available for the desired interface in supported_board.json')
-        return '../templates/vivado_accelerator/' + self.board + '/tcl_scripts/' + tcl_script
+        if  self.board.startswith('alveo'):
+            return '../templates/vivado_accelerator/' + 'alveo/'  + '/tcl_scripts/' + tcl_script
+        else: 
+            return '../templates/vivado_accelerator/' + self.board + '/tcl_scripts/' + tcl_script
+