config: Break out base options for usage with NULL ISA

This patch breaks out the most basic configuration options into a set
of base options, to allow them to be used also by scripts that do not
involve any ISA, and thus no actual CPUs or devices.

The patch also fixes a few modules so that they can be imported in a
NULL build, and avoid dragging in FSConfig every time Options is
imported.

configs/common/CpuConfig.py

@@ -70,7 +70,7 @@ def is_cpu_class(cls):
         return issubclass(cls, m5.objects.BaseCPU) and \
             not cls.abstract and \
             not issubclass(cls, m5.objects.CheckerCPU)
-    except TypeError:
+    except (TypeError, AttributeError):
         return False
 
 def get(name):

configs/common/FSConfig.py

@@ -42,7 +42,7 @@
 from m5.objects import *
 from Benchmarks import *
 from m5.util import *
-import PlatformConfig
+from common import PlatformConfig
 
 # Populate to reflect supported os types per target ISA
 os_types = { 'alpha' : [ 'linux' ],

configs/common/Options.py

@@ -41,13 +41,11 @@
 import m5
 from m5.defines import buildEnv
 from m5.objects import *
-from Benchmarks import *
+from common.Benchmarks import *
 
-import CpuConfig
+from common import CpuConfig
-import MemConfig
+from common import MemConfig
-import PlatformConfig
+from common import PlatformConfig
-
-from FSConfig import os_types
 
 def _listCpuTypes(option, opt, value, parser):
     CpuConfig.print_cpu_list()
@@ -61,15 +59,10 @@ def _listPlatformTypes(option, opt, value, parser):
     PlatformConfig.print_platform_list()
     sys.exit(0)
 
-def addCommonOptions(parser):
+# Add the very basic options that work also in the case of the no ISA
-    # system options
+# being used, and consequently no CPUs, but rather various types of
-    parser.add_option("--list-cpu-types",
+# testers and traffic generators.
-                      action="callback", callback=_listCpuTypes,
+def addNoISAOptions(parser):
-                      help="List available CPU types")
-    parser.add_option("--cpu-type", type="choice", default="atomic",
-                      choices=CpuConfig.cpu_names(),
-                      help = "type of cpu to run with")
-    parser.add_option("--checker", action="store_true");
     parser.add_option("-n", "--num-cpus", type="int", default=1)
     parser.add_option("--sys-voltage", action="store", type="string",
                       default='1.0V',
@@ -79,6 +72,73 @@ def addCommonOptions(parser):
                       default='1GHz',
                       help = """Top-level clock for blocks running at system
                       speed""")
+
+    # Memory Options
+    parser.add_option("--list-mem-types",
+                      action="callback", callback=_listMemTypes,
+                      help="List available memory types")
+    parser.add_option("--mem-type", type="choice", default="DDR3_1600_x64",
+                      choices=MemConfig.mem_names(),
+                      help = "type of memory to use")
+    parser.add_option("--mem-channels", type="int", default=1,
+                      help = "number of memory channels")
+    parser.add_option("--mem-ranks", type="int", default=None,
+                      help = "number of memory ranks per channel")
+    parser.add_option("--mem-size", action="store", type="string",
+                      default="512MB",
+                      help="Specify the physical memory size (single memory)")
+
+
+    parser.add_option("--memchecker", action="store_true")
+
+    # Cache Options
+    parser.add_option("--external-memory-system", type="string",
+                      help="use external ports of this port_type for caches")
+    parser.add_option("--tlm-memory", type="string",
+                      help="use external port for SystemC TLM cosimulation")
+    parser.add_option("--caches", action="store_true")
+    parser.add_option("--l2cache", action="store_true")
+    parser.add_option("--num-dirs", type="int", default=1)
+    parser.add_option("--num-l2caches", type="int", default=1)
+    parser.add_option("--num-l3caches", type="int", default=1)
+    parser.add_option("--l1d_size", type="string", default="64kB")
+    parser.add_option("--l1i_size", type="string", default="32kB")
+    parser.add_option("--l2_size", type="string", default="2MB")
+    parser.add_option("--l3_size", type="string", default="16MB")
+    parser.add_option("--l1d_assoc", type="int", default=2)
+    parser.add_option("--l1i_assoc", type="int", default=2)
+    parser.add_option("--l2_assoc", type="int", default=8)
+    parser.add_option("--l3_assoc", type="int", default=16)
+    parser.add_option("--cacheline_size", type="int", default=64)
+
+    # Enable Ruby
+    parser.add_option("--ruby", action="store_true")
+
+    # Run duration options
+    parser.add_option("-m", "--abs-max-tick", type="int", default=m5.MaxTick,
+                      metavar="TICKS", help="Run to absolute simulated tick "
+                      "specified including ticks from a restored checkpoint")
+    parser.add_option("--rel-max-tick", type="int", default=None,
+                      metavar="TICKS", help="Simulate for specified number of"
+                      " ticks relative to the simulation start tick (e.g. if "
+                      "restoring a checkpoint)")
+    parser.add_option("--maxtime", type="float", default=None,
+                      help="Run to the specified absolute simulated time in "
+                      "seconds")
+
+# Add common options that assume a non-NULL ISA.
+def addCommonOptions(parser):
+    # start by adding the base options that do not assume an ISA
+    addNoISAOptions(parser)
+
+    # system options
+    parser.add_option("--list-cpu-types",
+                      action="callback", callback=_listCpuTypes,
+                      help="List available CPU types")
+    parser.add_option("--cpu-type", type="choice", default="atomic",
+                      choices=CpuConfig.cpu_names(),
+                      help = "type of cpu to run with")
+    parser.add_option("--checker", action="store_true");
     parser.add_option("--cpu-clock", action="store", type="string",
                       default='2GHz',
                       help="Clock for blocks running at CPU speed")
@@ -101,46 +161,10 @@ def addCommonOptions(parser):
                       Elastic Trace probe in a capture simulation and
                       Trace CPU in a replay simulation""", default="")
 
-    # Memory Options
-    parser.add_option("--list-mem-types",
-                      action="callback", callback=_listMemTypes,
-                      help="List available memory types")
-    parser.add_option("--mem-type", type="choice", default="DDR3_1600_x64",
-                      choices=MemConfig.mem_names(),
-                      help = "type of memory to use")
-    parser.add_option("--mem-channels", type="int", default=1,
-                      help = "number of memory channels")
-    parser.add_option("--mem-ranks", type="int", default=None,
-                      help = "number of memory ranks per channel")
-    parser.add_option("--mem-size", action="store", type="string",
-                      default="512MB",
-                      help="Specify the physical memory size (single memory)")
-
     parser.add_option("-l", "--lpae", action="store_true")
     parser.add_option("-V", "--virtualisation", action="store_true")
 
-    parser.add_option("--memchecker", action="store_true")
-
-    # Cache Options
-    parser.add_option("--external-memory-system", type="string",
-                      help="use external ports of this port_type for caches")
-    parser.add_option("--tlm-memory", type="string",
-                      help="use external port for SystemC TLM cosimulation")
-    parser.add_option("--caches", action="store_true")
-    parser.add_option("--l2cache", action="store_true")
     parser.add_option("--fastmem", action="store_true")
-    parser.add_option("--num-dirs", type="int", default=1)
-    parser.add_option("--num-l2caches", type="int", default=1)
-    parser.add_option("--num-l3caches", type="int", default=1)
-    parser.add_option("--l1d_size", type="string", default="64kB")
-    parser.add_option("--l1i_size", type="string", default="32kB")
-    parser.add_option("--l2_size", type="string", default="2MB")
-    parser.add_option("--l3_size", type="string", default="16MB")
-    parser.add_option("--l1d_assoc", type="int", default=2)
-    parser.add_option("--l1i_assoc", type="int", default=2)
-    parser.add_option("--l2_assoc", type="int", default=8)
-    parser.add_option("--l3_assoc", type="int", default=16)
-    parser.add_option("--cacheline_size", type="int", default=64)
 
     # dist-gem5 options
     parser.add_option("--dist", action="store_true",
@@ -175,20 +199,7 @@ def addCommonOptions(parser):
                       action="store", type="string",
                       help="Link delay in seconds\nDEFAULT: 10us")
 
-    # Enable Ruby
-    parser.add_option("--ruby", action="store_true")
-
     # Run duration options
-    parser.add_option("-m", "--abs-max-tick", type="int", default=m5.MaxTick,
-                      metavar="TICKS", help="Run to absolute simulated tick " \
-                      "specified including ticks from a restored checkpoint")
-    parser.add_option("--rel-max-tick", type="int", default=None,
-                      metavar="TICKS", help="Simulate for specified number of" \
-                      " ticks relative to the simulation start tick (e.g. if " \
-                      "restoring a checkpoint)")
-    parser.add_option("--maxtime", type="float", default=None,
-                      help="Run to the specified absolute simulated time in " \
-                      "seconds")
     parser.add_option("-I", "--maxinsts", action="store", type="int",
                       default=None, help="""Total number of instructions to
                                             simulate (default: run forever)""")
@@ -297,6 +308,8 @@ def addSEOptions(parser):
                       help="Redirect stderr to a file.")
 
 def addFSOptions(parser):
+    from FSConfig import os_types
+
     # Simulation options
     parser.add_option("--timesync", action="store_true",
             help="Prevent simulated time from getting ahead of real time")

configs/common/PlatformConfig.py

@@ -63,7 +63,7 @@ def is_platform_class(cls):
     try:
         return issubclass(cls, m5.objects.Platform) and \
             not cls.abstract
-    except TypeError:
+    except (TypeError, AttributeError):
         return False
 
 def get(name):

configs/common/Simulation.py

@@ -43,8 +43,8 @@ import sys
 from os import getcwd
 from os.path import join as joinpath
 
-import CpuConfig
+from common import CpuConfig
-import MemConfig
+from common import MemConfig
 
 import m5
 from m5.defines import buildEnv

configs/example/garnet_synth_traffic.py

@@ -43,7 +43,7 @@ config_root = os.path.dirname(config_path)
 m5_root = os.path.dirname(config_root)
 
 parser = optparse.OptionParser()
-Options.addCommonOptions(parser)
+Options.addNoISAOptions(parser)
 
 parser.add_option("--synthetic", type="choice", default="uniform_random",
                   choices=['uniform_random', 'tornado', 'bit_complement', \

configs/example/ruby_direct_test.py

@@ -45,7 +45,7 @@ config_root = os.path.dirname(config_path)
 m5_root = os.path.dirname(config_root)
 
 parser = optparse.OptionParser()
-Options.addCommonOptions(parser)
+Options.addNoISAOptions(parser)
 
 parser.add_option("--requests", metavar="N", default=100,
                   help="Stop after N requests")

configs/example/ruby_gpu_random_test.py

@@ -50,7 +50,7 @@ config_root = os.path.dirname(config_path)
 m5_root = os.path.dirname(config_root)
 
 parser = optparse.OptionParser()
-Options.addCommonOptions(parser)
+Options.addNoISAOptions(parser)
 
 parser.add_option("--maxloads", metavar="N", default=100,
                   help="Stop after N loads")

configs/example/ruby_mem_test.py

@@ -44,7 +44,7 @@ config_path = os.path.dirname(os.path.abspath(__file__))
 config_root = os.path.dirname(config_path)
 
 parser = optparse.OptionParser()
-Options.addCommonOptions(parser)
+Options.addNoISAOptions(parser)
 
 parser.add_option("--maxloads", metavar="N", default=0,
                   help="Stop after N loads")

configs/example/ruby_random_test.py

@@ -45,7 +45,7 @@ config_root = os.path.dirname(config_path)
 m5_root = os.path.dirname(config_root)
 
 parser = optparse.OptionParser()
-Options.addCommonOptions(parser)
+Options.addNoISAOptions(parser)
 
 parser.add_option("--maxloads", metavar="N", default=100,
                   help="Stop after N loads")