mibuild.xilinx_vivado: support settingsXX.sh

* in the process refactor the version search, the architecture bit width
 detection, the settings search and all also for xilinx_ise
* use distutils.version.StrictVersion

mibuild/tools.py

@@ -1,4 +1,5 @@
-import os
+import os, struct
+from distutils.version import StrictVersion
 
 def mkdir_noerror(d):
 	try:
@@ -21,3 +22,16 @@ def write_to_file(filename, contents, force_unix=False):
 	f = open(filename, "w", newline=newline)
 	f.write(contents)
 	f.close()
+
+def arch_bits():
+	return struct.calcsize("P")*8
+
+def versions(path):
+	for n in os.listdir(path):
+		full = os.path.join(path, n)
+		if not os.path.isdir(full):
+			continue
+		try:
+			yield StrictVersion(n)
+		except ValueError:
+			continue

mibuild/xilinx_ise.py

@@ -1,5 +1,4 @@
-import os, struct, subprocess, sys
-from decimal import Decimal
+import os, subprocess, sys
 
 from migen.fhdl.std import *
 from migen.fhdl.specials import SynthesisDirective
@@ -7,7 +6,7 @@ from migen.genlib.cdc import *
 from migen.fhdl.structure import _Fragment
 
 from mibuild.generic_platform import *
-from mibuild import tools
+from mibuild import tools, xilinx_tools
 
 def _format_constraint(c):
 	if isinstance(c, Pins):
@@ -89,34 +88,21 @@ synth_xilinx -arch {arch} -top top -edif {build_name}.edif""".format(arch=arch,
 	if r != 0:
 		raise OSError("Subprocess failed")
 
-def _is_valid_version(path, v):
-	try: 
-		Decimal(v)
-		return os.path.isdir(os.path.join(path, v))
-	except:
-		return False
-
 def _run_ise(build_name, ise_path, source, mode, ngdbuild_opt,
-		bitgen_opt, ise_commands, map_opt, par_opt):
+		bitgen_opt, ise_commands, map_opt, par_opt, ver=None):
 	if sys.platform == "win32" or sys.platform == "cygwin":
 		source = False
 	build_script_contents = "# Autogenerated by mibuild\nset -e\n"
 	if source:
-		vers = [ver for ver in os.listdir(ise_path) if _is_valid_version(ise_path, ver)]
-		tools_version = max(vers)
-		bits = struct.calcsize("P")*8
-		
-		xilinx_settings_file = os.path.join(ise_path, tools_version, "ISE_DS", "settings{0}.sh".format(bits))
-		if not os.path.exists(xilinx_settings_file) and bits == 64:
-			# if we are on 64-bit system but the toolchain isn't, try the 32-bit env.
-			xilinx_settings_file = os.path.join(ise_path, tools_version, "ISE_DS", "settings32.sh")
-		build_script_contents += "source " + xilinx_settings_file + "\n"
+		settings = xilinx_tools.settings(ise_path, ver, "ISE_DS")
+		build_script_contents += "source " + settings + "\n"
 	if mode == "edif":
 		ext = "edif"
 	else:
 		ext = "ngc"
 		build_script_contents += """
-xst -ifn {build_name}.xst"""
+xst -ifn {build_name}.xst
+"""
 
 	build_script_contents += """
 ngdbuild {ngdbuild_opt} -uc {build_name}.ucf {build_name}.{ext} {build_name}.ngd

mibuild/xilinx_tools.py

@@ -0,0 +1,27 @@
+import os
+from distutils.version import StrictVersion
+
+from mibuild import tools
+
+def settings(path, ver=None, sub=None):
+	vers = list(tools.versions(path))
+	if ver is None:
+		ver = max(vers)
+	else:
+		ver = StrictVersion(ver)
+		assert ver in vers
+
+	full = os.path.join(path, str(ver))
+	if sub:
+		full = os.path.join(full, sub)
+
+	search = [64, 32]
+	if tools.arch_bits() == 32:
+		search.reverse()
+
+	for b in search:
+		settings = os.path.join(full, "settings{0}.sh".format(b))
+		if os.path.exists(settings):
+			return settings
+
+	raise ValueError("no settings file found")

mibuild/xilinx_vivado.py

@@ -7,7 +7,7 @@ from migen.fhdl.std import *
 from migen.fhdl.structure import _Fragment
 
 from mibuild.generic_platform import *
-from mibuild import tools
+from mibuild import tools, xilinx_tools
 
 def _format_constraint(c):
 	if isinstance(c, Pins):
@@ -56,15 +56,14 @@ def _build_files(device, sources, vincpaths, build_name):
 	tcl_contents += "quit\n"	
 	tools.write_to_file(build_name + ".tcl", tcl_contents)
 
-def _run_vivado(build_name, vivado_path, source):
+def _run_vivado(build_name, vivado_path, source, ver=None):
 	if sys.platform == "win32" or sys.platform == "cygwin":
 		source = False
 	build_script_contents = "# Autogenerated by mibuild\nset -e\n"
 	if source:
-		raise NotImplementedError
-	build_script_contents += """
-vivado -mode tcl -source {build_name}.tcl
-""".format(build_name=build_name)
+		settings = xilinx_tools.settings(vivado_path, ver)
+		build_script_contents += "source " + settings + "\n"
+	build_script_contents += "vivado -mode tcl -source " + build_name + ".tcl\n"
 	build_script_file = "build_" + build_name + ".sh"
 	tools.write_to_file(build_script_file, build_script_contents, force_unix=True)
 
@@ -80,7 +79,7 @@ class XilinxVivadoPlatform(GenericPlatform):
 		return GenericPlatform.get_verilog(self, *args, special_overrides=so, **kwargs)
 
 	def build(self, fragment, build_dir="build", build_name="top",
-			vivado_path="/opt/Xilinx", source=True, run=True):
+			vivado_path="/opt/Xilinx/Vivado", source=True, run=True):
 		tools.mkdir_noerror(build_dir)
 		os.chdir(build_dir)