diff --git a/litex/build/altera/platform.py b/litex/build/altera/platform.py
index bfcbba829..e023d2ced 100644
--- a/litex/build/altera/platform.py
+++ b/litex/build/altera/platform.py
@@ -62,3 +62,11 @@ class AlteraPlatform(GenericPlatform):
         for pad in common.altera_reserved_jtag_pads:
             r[pad] = self.request(pad)
         return r
+
+    @classmethod
+    def fill_args(cls, toolchain, parser):
+        quartus.fill_args(parser)
+
+    @classmethod
+    def get_argdict(cls, toolchain, args):
+        return quartus.get_argdict(args)
diff --git a/litex/build/altera/quartus.py b/litex/build/altera/quartus.py
index f85f3a4c0..985ad0729 100644
--- a/litex/build/altera/quartus.py
+++ b/litex/build/altera/quartus.py
@@ -28,10 +28,19 @@ class AlteraQuartusToolchain(GenericToolchain):
 
     def __init__(self):
         super().__init__()
+        self._synth_tool             = "quartus_map"
         self.additional_sdc_commands = []
         self.additional_qsf_commands = []
         self.cst                     = []
 
+    def build(self, platform, fragment,
+        synth_tool = "quartus_map",
+        **kwargs):
+
+        self._synth_tool = synth_tool
+
+        return GenericToolchain.build(self, platform, fragment, **kwargs)
+
     # IO/Placement Constraints (.qsf) --------------------------------------------------------------
 
     def _format_constraint(self, c, signame, fmt_r):
@@ -178,7 +187,7 @@ class AlteraQuartusToolchain(GenericToolchain):
             script_contents += "# Autogenerated by LiteX / git: " + tools.get_litex_git_revision() + "\n"
             script_contents += "set -e -u -x -o pipefail\n"
         script_contents += """
-quartus_map --read_settings_files=on  --write_settings_files=off {build_name} -c {build_name}
+{synth_tool} --read_settings_files=on  --write_settings_files=off {build_name} -c {build_name}
 quartus_fit --read_settings_files=off --write_settings_files=off {build_name} -c {build_name}
 quartus_asm --read_settings_files=off --write_settings_files=off {build_name} -c {build_name}
 quartus_sta {build_name} -c {build_name}"""
@@ -196,7 +205,7 @@ then
     quartus_cpf -c {build_name}.sof {build_name}.rbf
 fi
 """
-        script_contents = script_contents.format(build_name=build_name)
+        script_contents = script_contents.format(build_name=build_name, synth_tool=self._synth_tool)
         tools.write_to_file(script_file, script_contents, force_unix=True)
 
         return script_file
@@ -207,10 +216,19 @@ fi
         else:
             shell = ["bash"]
 
-        if which("quartus_map") is None:
+        if which(self._synth_tool) is None:
             msg = "Unable to find Quartus toolchain, please:\n"
             msg += "- Add Quartus toolchain to your $PATH."
             raise OSError(msg)
 
         if subprocess.call(shell + [script]) != 0:
             raise OSError("Error occured during Quartus's script execution.")
+
+def fill_args(parser):
+    toolchain_group = parser.add_argument_group(title="Quartus toolchain options")
+    toolchain_group.add_argument("--synth-tool", default="quartus_map", help="Synthesis mode (quartus_map or quartus_syn).")
+
+def get_argdict(args):
+    return {
+        "synth_tool" : args.synth_tool,
+    }