diff --git a/litex/build/altera/platform.py b/litex/build/altera/platform.py
index 0e7f24d09..87471b58c 100644
--- a/litex/build/altera/platform.py
+++ b/litex/build/altera/platform.py
@@ -16,6 +16,8 @@ class AlteraPlatform(GenericPlatform):
     bitstream_ext = ".sof"
     create_rbf    = True
 
+    _supported_toolchains = ["quartus"]
+
     def __init__(self, *args, toolchain="quartus", **kwargs):
         GenericPlatform.__init__(self, *args, **kwargs)
         self.ips = set()
diff --git a/litex/build/anlogic/platform.py b/litex/build/anlogic/platform.py
index b5bfab63c..e857ce0a6 100644
--- a/litex/build/anlogic/platform.py
+++ b/litex/build/anlogic/platform.py
@@ -15,6 +15,8 @@ from litex.build.anlogic import common, anlogic
 class AnlogicPlatform(GenericPlatform):
     bitstream_ext = ".fs"
 
+    _supported_toolchains = ["td"]
+
     def __init__(self, device, *args, toolchain="td", **kwargs):
         GenericPlatform.__init__(self, device, *args, **kwargs)
         if toolchain == "td":
diff --git a/litex/build/argument_parser.py b/litex/build/argument_parser.py
new file mode 100644
index 000000000..944095759
--- /dev/null
+++ b/litex/build/argument_parser.py
@@ -0,0 +1,194 @@
+#
+# This file is part of LiteX.
+#
+# This file is Copyright (c) 2022 Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
+# SPDX-License-Identifier: BSD-2-Clause
+
+import argparse
+import importlib
+import sys
+
+from litex.soc.integration.soc_core import *
+from litex.soc.integration.builder import *
+
+# LitexArgumentParser ------------------------------------------------------------------------------
+class LiteXArgumentParser(argparse.ArgumentParser):
+    """
+    ArgumentParser subclass used to intercept parse_args call and to simplify
+    common arguments addition
+    Attributes
+    ==========
+    _platform: GenericPlatform subclass
+        target platform
+    _device: str
+        target device family
+    _args: argparse.Namespace
+        list of args after parse_args call
+    _toolchain: str
+        toolchain used at build time
+    _default_toolchain: str
+        toolchain to use by default or when no selection is done  by the user
+    """
+    def __init__(self, platform=None, **kwargs):
+        """
+        CTOR: create a Target options group, adds toolchain, build and load
+        arguments. Call builder_args and soc_core_args for fill parser with
+        corresponding options
+
+        Parameters
+        ==========
+        platform: GenericPlatform subclass
+            targeted platform
+        kwargs: dict
+            all arguments passed to argparse.ArgumentParser CTOR
+        """
+        argparse.ArgumentParser.__init__(self, kwargs)
+        self._platform = platform
+        if platform is not None:
+            self._device            = platform.device_family
+            toolchains              = platform.toolchains(self._device)
+            self._default_toolchain = toolchains[0]
+        else:
+            self._device            = None
+            toolchains              = None
+            self._default_toolchain = None
+        self._args              = None
+        self._toolchain         = None
+
+        self._target_group = self.add_argument_group(title="Target options")
+        if toolchains is not None:
+            self.add_target_argument("--toolchain",
+                                     default=self._default_toolchain,
+                                     choices=toolchains,
+                                     help="FPGA toolchain ({}).".format(" or ".join(toolchains)))
+        else:
+            self.add_target_argument("-toolchain", help="FPGA toolchain")
+        self.add_target_argument("--build",     action="store_true", help="Build design.")
+        self.add_target_argument("--load",      action="store_true", help="Load bitstream.")
+        builder_args(self)
+        soc_core_args(self)
+
+    def set_platform(self, platform):
+        """ set platform. Check first if not already set
+
+        Parameter
+        =========
+        platform: GenericPlatform subclass
+            the platform
+        """
+        assert self._platform is None
+        self._platform          = platform
+        self._device            = platform.device_family
+        toolchains              = platform.toolchains(self._device)
+        self._default_toolchain = toolchains[0]
+    # add a setter (LitexArgumentParserInstance.platform = myPlatform)
+    platform = property(None, set_platform)
+
+    @property
+    def target_group(self):
+        """ return target_group
+        """
+        return self._target_group
+
+    def add_target_argument(self, *args, **kwargs):
+        """ wrapper to add argument to "Target options group" from outer of this
+        class
+        """
+        self._target_group.add_argument(*args, **kwargs)
+
+    @property
+    def builder_argdict(self):
+        """
+        access to builder_argdict
+
+        Return
+        ======
+        builder arguments dict
+        """
+        return builder_argdict(self._args)
+
+    @property
+    def soc_core_argdict(self):
+        """
+        access to soc_core_argdict
+
+        Return
+        ======
+        soc_core arguments dict
+        """
+        return soc_core_argdict(self._args)
+
+    @property
+    def toolchain_argdict(self):
+        """
+        access to target toolchain argdict
+
+        Return
+        ======
+        toolchain arguments dict
+        """
+        if self._platform is None:
+            return dict()
+        else:
+            return self._platform.get_argdict(self._toolchain, self._args)
+
+    def parse_args(self, args=None, namespace=None):
+        """
+        override argparse.ArgumentParser.parse_args to inject toolchain
+        and soc_core args.
+        Checks first is platform is set: when platform is none: try to
+        search for a platform argument
+        """
+        # When platform is None try to search for a user input
+        if self._platform is None:
+            platform = self.get_value_from_key("--platform", None)
+            if platform is not None:
+                self.set_platform(importlib.import_module(platform).Platform)
+
+        # Intercept selected toolchain to fill arguments.
+        if self._platform is not None:
+            self._toolchain = self.get_value_from_key("--toolchain",
+                                                      self._default_toolchain)
+            if self._toolchain is not None:
+                self._platform.fill_args(self._toolchain, self)
+
+        # Intercept selected CPU to fill arguments.
+        cpu_cls = None
+        cpu_name = self.get_value_from_key("--cpu-type")
+        if cpu_name is not None:
+            cpu_cls = cpu.CPUS[cpu_name]
+            if cpu_cls is not None and hasattr(cpu_cls, "args_fill"):
+                cpu_cls.args_fill(self)
+        self._args = argparse.ArgumentParser.parse_args(self, args, namespace)
+
+        # Re-inject CPU read arguments.
+        if cpu_cls is not None and hasattr(cpu_cls, "args_read"):
+            cpu_cls.args_read(args)
+
+        return self._args
+
+    def get_value_from_key(self, key, default=None):
+        """
+        search key into sys.argv
+
+        Parameters
+        ==========
+        key: str
+            key to search
+        default: str
+            default value when key is not in sys.argv
+
+        Return
+        ======
+            sys.argv corresponding value or default
+        """
+        value = None
+        try:
+            index = [i for i, item in enumerate(sys.argv) if key in item][0]
+            if '=' in sys.argv[index]:
+                value = sys.argv[index].split('=')[1]
+            else:
+                value = sys.argv[index+1]
+        except IndexError:
+            value = default
+        return value
diff --git a/litex/build/efinix/platform.py b/litex/build/efinix/platform.py
index 948b0033c..a186cae3d 100644
--- a/litex/build/efinix/platform.py
+++ b/litex/build/efinix/platform.py
@@ -18,6 +18,8 @@ from litex.build.efinix import EfinixDbParser
 class EfinixPlatform(GenericPlatform):
     bitstream_ext = ".bit"
 
+    _supported_toolchains = ["efinity"]
+
     def __init__(self, *args, iobank_info=None, toolchain="efinity", **kwargs):
         GenericPlatform.__init__(self, *args, **kwargs)
 
diff --git a/litex/build/generic_platform.py b/litex/build/generic_platform.py
index 0826e4a28..c86287bee 100644
--- a/litex/build/generic_platform.py
+++ b/litex/build/generic_platform.py
@@ -322,6 +322,8 @@ class ConstraintManager:
 # Generic Platform ---------------------------------------------------------------------------------
 
 class GenericPlatform:
+    device_family = None
+
     def __init__(self, device, io, connectors=[], name=None):
         self.toolchain          = None
         self.device             = device
@@ -467,3 +469,54 @@ class GenericPlatform:
     @property
     def support_mixed_language(self):
         return self.toolchain.support_mixed_language
+
+    @classmethod
+    def fill_args(cls, toolchain, parser):
+        """
+        pass parser to the specific toolchain to
+        fill this with toolchain args
+
+        Parameters
+        ==========
+        toolchain: str
+            toolchain name
+        parser: argparse.ArgumentParser
+            parser to be filled
+        """
+        pass # pass must be overloaded (if required)
+
+    @classmethod
+    def get_argdict(cls, toolchain, args):
+        """
+        return a dict of args
+
+        Parameters
+        ==========
+        toolchain: str
+            toolchain name
+
+        Return
+        ======
+        a dict of key/value for each args or an empty dict
+        """
+        return {} # Empty must be overloaded (if required)
+
+    @classmethod
+    def toolchains(cls, device):
+        """
+        Returns list of toolchains compatible with device
+
+        Parameters
+        ==========
+        device: str
+            device name (ice40, ecp5, nexus)
+
+        Return
+        ======
+        A list of compatible toolchains (str) or an empty list
+        """
+        if type(cls._supported_toolchains) == dict:
+            assert device is not None
+            return cls._supported_toolchains[device]
+        else:
+            return cls._supported_toolchains
diff --git a/litex/build/gowin/platform.py b/litex/build/gowin/platform.py
index d130d7b8f..62525fe65 100644
--- a/litex/build/gowin/platform.py
+++ b/litex/build/gowin/platform.py
@@ -15,6 +15,8 @@ from litex.build.gowin import common, gowin
 class GowinPlatform(GenericPlatform):
     bitstream_ext = ".fs"
 
+    _supported_toolchains = ["gowin", "apicula"]
+
     def __init__(self, device, *args, toolchain="gowin", devicename=None, **kwargs):
         GenericPlatform.__init__(self, device, *args, **kwargs)
         if not devicename:
diff --git a/litex/build/lattice/__init__.py b/litex/build/lattice/__init__.py
index 6b356c722..95b9e92f6 100644
--- a/litex/build/lattice/__init__.py
+++ b/litex/build/lattice/__init__.py
@@ -1,2 +1,2 @@
-from litex.build.lattice.platform import LatticePlatform
+from litex.build.lattice.platform import LatticePlatform, LatticeiCE40Platform, LatticeECP5Platform, LatticeNexusPlatform
 from litex.build.lattice.programmer import LatticeProgrammer
diff --git a/litex/build/lattice/icestorm.py b/litex/build/lattice/icestorm.py
index 597e09003..db88daf12 100644
--- a/litex/build/lattice/icestorm.py
+++ b/litex/build/lattice/icestorm.py
@@ -106,7 +106,7 @@ class LatticeIceStormToolchain(YosysNextPNRToolchain):
 
 
 def icestorm_args(parser):
-    toolchain_group = parser.add_argument_group(title="Toolchain options")
+    toolchain_group = parser.add_argument_group(title="Icestorm toolchain options")
     yosys_nextpnr_args(toolchain_group)
 
 def icestorm_argdict(args):
diff --git a/litex/build/lattice/oxide.py b/litex/build/lattice/oxide.py
index 7bc2f094f..9fa2f2a1c 100644
--- a/litex/build/lattice/oxide.py
+++ b/litex/build/lattice/oxide.py
@@ -62,7 +62,7 @@ class LatticeOxideToolchain(YosysNextPNRToolchain):
         return (self._build_name + ".pdc", "PDC")
 
 def oxide_args(parser):
-    toolchain_group = parser.add_argument_group(title="Toolchain options")
+    toolchain_group = parser.add_argument_group(title="Oxide toolchain options")
     yosys_nextpnr_args(toolchain_group)
     toolchain_group.add_argument("--nexus-es-device", action="store_true", help="Use Nexus-ES1 part.")
 
diff --git a/litex/build/lattice/platform.py b/litex/build/lattice/platform.py
index 3e95f8322..b6bf94788 100644
--- a/litex/build/lattice/platform.py
+++ b/litex/build/lattice/platform.py
@@ -13,6 +13,12 @@ from litex.build.lattice import common, diamond, icestorm, trellis, radiant, oxi
 class LatticePlatform(GenericPlatform):
     bitstream_ext = ".bit"
 
+    _supported_toolchains = {
+        "ice40": ["icestorm"],
+        "ecp5":  ["trellis", "diamond"],
+        "nexus": ["radiant", "oxide"],
+    }
+
     def __init__(self, *args, toolchain="diamond", **kwargs):
         GenericPlatform.__init__(self, *args, **kwargs)
         if toolchain == "diamond":
@@ -38,7 +44,6 @@ class LatticePlatform(GenericPlatform):
             attr_translate    = self.toolchain.attr_translate,
             **kwargs)
 
-
     def build(self, *args, **kwargs):
         return self.toolchain.build(self, *args, **kwargs)
 
@@ -54,3 +59,67 @@ class LatticePlatform(GenericPlatform):
         if hasattr(to, "p"):
             to = to.p
         self.toolchain.add_false_path_constraint(self, from_, to)
+
+    @classmethod
+    def fill_args(cls, toolchain, parser):
+        """
+        pass parser to the specific toolchain to
+        fill this with toolchain args
+
+        Parameters
+        ==========
+        toolchain: str
+            toolchain name
+        parser: argparse.ArgumentParser
+            parser to be filled
+        """
+        if toolchain == "radiant":
+            radiant.radiant_build_args(parser)
+        elif toolchain == "oxide":
+            oxide.oxide_args(parser)
+        elif toolchain == "trellis":
+            trellis.trellis_args(parser)
+        elif toolchain == "icestorm":
+            icestorm.icestorm_args(parser)
+        # nothing for diamond
+
+    @classmethod
+    def get_argdict(cls, toolchain, args):
+        """
+        return a dict of args
+
+        Parameters
+        ==========
+        toolchain: str
+            toolchain name
+
+        Return
+        ======
+        a dict of key/value for each args or an empty dict
+        """
+        if toolchain == "radiant":
+            return radiant.radiant_build_argdict(args)
+        elif toolchain == "oxide":
+            return oxide.oxide_argdict(args)
+        elif toolchain == "trellis":
+            return trellis.trellis_argdict(args)
+        elif toolchain == "icestorm":
+            return icestorm.icestorm_argdict(args)
+        else:
+            return {}
+        # nothing for diamond
+
+# LatticeiCE40Platform -----------------------------------------------------------------------------
+
+class LatticeiCE40Platform(LatticePlatform):
+    device_family = "ice40"
+
+# LatticeECP5Platform ------------------------------------------------------------------------------
+
+class LatticeECP5Platform(LatticePlatform):
+    device_family = "ecp5"
+
+# LatticeNexusPlatform -----------------------------------------------------------------------------
+
+class LatticeNexusPlatform(LatticePlatform):
+    device_family = "nexus"
diff --git a/litex/build/lattice/radiant.py b/litex/build/lattice/radiant.py
index 328a2dde6..9cb54b730 100644
--- a/litex/build/lattice/radiant.py
+++ b/litex/build/lattice/radiant.py
@@ -273,7 +273,7 @@ class LatticeRadiantToolchain(GenericToolchain):
 
 
 def radiant_build_args(parser):
-    toolchain_group = parser.add_argument_group(title="Toolchain options")
+    toolchain_group = parser.add_argument_group(title="Radiant toolchain options")
     toolchain_group.add_argument("--synth-mode", default="synplify", help="Synthesis mode (synplify or yosys).")
 
 def radiant_build_argdict(args):
diff --git a/litex/build/lattice/trellis.py b/litex/build/lattice/trellis.py
index 0a833613d..0f365c831 100644
--- a/litex/build/lattice/trellis.py
+++ b/litex/build/lattice/trellis.py
@@ -150,7 +150,7 @@ class LatticeTrellisToolchain(YosysNextPNRToolchain):
             freq=str(float(1/period)*1000), clk="{clk}"), clk=clk)
 
 def trellis_args(parser):
-    toolchain_group = parser.add_argument_group(title="Toolchain options")
+    toolchain_group = parser.add_argument_group(title="Trellis toolchain options")
     yosys_nextpnr_args(toolchain_group)
     toolchain_group.add_argument("--ecppack-bootaddr",     default=0,           help="Set boot address for next image.")
     toolchain_group.add_argument("--ecppack-spimode",      default=None,        help="Set slave SPI programming mode.")
diff --git a/litex/build/microsemi/platform.py b/litex/build/microsemi/platform.py
index ac4aa6938..a36ee7656 100644
--- a/litex/build/microsemi/platform.py
+++ b/litex/build/microsemi/platform.py
@@ -12,6 +12,8 @@ from litex.build.microsemi import common, libero_soc
 class MicrosemiPlatform(GenericPlatform):
     bitstream_ext = ".bit"
 
+    _supported_toolchains = ["libero_soc_polarfire"]
+
     def __init__(self, *args, toolchain="libero_soc_polarfire", **kwargs):
         GenericPlatform.__init__(self, *args, **kwargs)
         if toolchain == "libero_soc_polarfire":
diff --git a/litex/build/osfpga/platform.py b/litex/build/osfpga/platform.py
index d04fc06f0..bdd576651 100644
--- a/litex/build/osfpga/platform.py
+++ b/litex/build/osfpga/platform.py
@@ -14,6 +14,8 @@ from litex.build.osfpga import common, osfpga
 class OSFPGAPlatform(GenericPlatform):
     bitstream_ext = ".bin"
 
+    _supported_toolchains = ["osfpga"]
+
     def __init__(self, device, *args, toolchain="foedag", devicename=None, **kwargs):
         GenericPlatform.__init__(self, device, *args, **kwargs)
         self.devicename = devicename
diff --git a/litex/build/quicklogic/platform.py b/litex/build/quicklogic/platform.py
index 8142f22d4..506ac0bed 100644
--- a/litex/build/quicklogic/platform.py
+++ b/litex/build/quicklogic/platform.py
@@ -14,6 +14,8 @@ from litex.build.quicklogic import common, f4pga
 class QuickLogicPlatform(GenericPlatform):
     bitstream_ext = ".bit"
 
+    _supported_toolchains = ["f4pga"]
+
     def __init__(self, *args, toolchain="f4pga", **kwargs):
         GenericPlatform.__init__(self, *args, **kwargs)
         if toolchain == "symbiflow" or toolchain == "f4pga":
diff --git a/litex/build/sim/platform.py b/litex/build/sim/platform.py
index 633a16892..bae83f907 100644
--- a/litex/build/sim/platform.py
+++ b/litex/build/sim/platform.py
@@ -16,6 +16,9 @@ from litex.soc.interconnect.csr import AutoCSR, CSR, CSRStorage
 
 
 class SimPlatform(GenericPlatform):
+
+    _supported_toolchains = ["verilator"]
+
     def __init__(self, device, io, name="sim", toolchain="verilator", **kwargs):
         if "sim_trace" not in (iface[0] for iface in io):
             io.append(("sim_trace", 0, Pins(1)))
diff --git a/litex/build/xilinx/__init__.py b/litex/build/xilinx/__init__.py
index 53e6e840a..9d9bc1801 100644
--- a/litex/build/xilinx/__init__.py
+++ b/litex/build/xilinx/__init__.py
@@ -1,2 +1,2 @@
-from litex.build.xilinx.platform import XilinxPlatform
+from litex.build.xilinx.platform import XilinxPlatform, XilinxSpartan6Platform, Xilinx7SeriesPlatform
 from litex.build.xilinx.programmer import UrJTAG, XC3SProg, FpgaProg, VivadoProgrammer, iMPACT, Adept
diff --git a/litex/build/xilinx/platform.py b/litex/build/xilinx/platform.py
index 14f6092bb..ad392c05e 100644
--- a/litex/build/xilinx/platform.py
+++ b/litex/build/xilinx/platform.py
@@ -9,13 +9,18 @@
 import os
 
 from litex.build.generic_platform import GenericPlatform
-from litex.build.xilinx import common
+from litex.build.xilinx import common, vivado, ise, yosys_nextpnr
 
 # XilinxPlatform -----------------------------------------------------------------------------------
 
 class XilinxPlatform(GenericPlatform):
     bitstream_ext = ".bit"
 
+    _supported_toolchains = {
+        "serie7":   ["vivado", "f4pga", "yosys+nextpnr"],
+        "spartan6": ["ise"],
+    }
+
     def __init__(self, *args, toolchain="ise", **kwargs):
         GenericPlatform.__init__(self, *args, **kwargs)
         self.edifs = set()
@@ -84,3 +89,49 @@ class XilinxPlatform(GenericPlatform):
         if hasattr(to, "p"):
             to = to.p
         self.toolchain.add_false_path_constraint(self, from_, to)
+
+    @classmethod
+    def fill_args(cls, toolchain, parser):
+        """
+        pass parser to the specific toolchain to
+        fill this with toolchain args
+
+        Parameters
+        ==========
+        toolchain: str
+            toolchain name
+        parser: argparse.ArgumentParser
+            parser to be filled
+        """
+        if toolchain == "vivado":
+            vivado.vivado_build_args(parser)
+
+    @classmethod
+    def get_argdict(cls, toolchain, args):
+        """
+        return a dict of args
+
+        Parameters
+        ==========
+        toolchain: str
+            toolchain name
+
+        Return
+        ======
+        a dict of key/value for each args or an empty dict
+        """
+        if toolchain == "vivado":
+            return vivado.vivado_build_argdict(args)
+        else:
+            return dict()
+
+# Xilinx7SeriesPlatform -----------------------------------------------------------------------------
+
+class Xilinx7SeriesPlatform(XilinxPlatform):
+    device_family = "serie7"
+
+# XilinxSpartan6Platform ---------------------------------------------------------------------------
+
+class XilinxSpartan6Platform(XilinxPlatform):
+    device_family = "spartan6"
+