diff -r a2fc624bdcc9 -r 959f8494b65e configs/common/Options.py
--- a/configs/common/Options.py	Fri Dec 16 15:31:50 2011 -0600
+++ b/configs/common/Options.py	Fri Dec 16 15:32:01 2011 -0600
@@ -63,7 +63,8 @@
                   help="exit at specified work end count")
 parser.add_option("--work-begin-exit-count", action="store", type="int",
                   help="exit at specified work begin count")
-
+parser.add_option("--init-param", action="store", type="int", default=0,
+                  help="Parameter available in simulation with m5 initparam")
 
 # Checkpointing options
 ###Note that performing checkpointing via python script files will override
diff -r a2fc624bdcc9 -r 959f8494b65e configs/example/fs.py
--- a/configs/example/fs.py	Fri Dec 16 15:31:50 2011 -0600
+++ b/configs/example/fs.py	Fri Dec 16 15:32:01 2011 -0600
@@ -151,6 +151,8 @@
 if options.script is not None:
     test_sys.readfile = options.script
 
+test_sys.init_param = options.init_param
+
 test_sys.cpu = [TestCPUClass(cpu_id=i) for i in xrange(np)]
 
 CacheConfig.config_cache(options, test_sys)
@@ -199,6 +201,7 @@
     if options.kernel is not None:
         drive_sys.kernel = binary(options.kernel)
 
+    drive_sys.init_param = options.init_param
     root = makeDualRoot(test_sys, drive_sys, options.etherdump)
 elif len(bm) == 1:
     root = Root(system=test_sys)
diff -r a2fc624bdcc9 -r 959f8494b65e src/arch/arm/isa/insts/m5ops.isa
--- a/src/arch/arm/isa/insts/m5ops.isa	Fri Dec 16 15:31:50 2011 -0600
+++ b/src/arch/arm/isa/insts/m5ops.isa	Fri Dec 16 15:32:01 2011 -0600
@@ -191,7 +191,9 @@
 
     initparamCode = '''
 #if FULL_SYSTEM
-    Rt = PseudoInst::initParam(xc->tcBase());
+    uint64_t ip_val  = PseudoInst::initParam(xc->tcBase());
+    R0 = bits(ip_val, 31, 0);
+    R1 = bits(ip_val, 63, 32);
 #else
     PseudoInst::panicFsOnlyPseudoInst("initparam");
     Rt = 0;
@@ -200,7 +202,8 @@
 
     initparamIop = InstObjParams("initparam", "Initparam", "PredOp",
                            { "code": initparamCode,
-                             "predicate_test": predicateTest })
+                             "predicate_test": predicateTest },
+                             ["IsNonSpeculative"])
     header_output += BasicDeclare.subst(initparamIop)
     decoder_output += BasicConstructor.subst(initparamIop)
     exec_output += PredOpExecute.subst(initparamIop)
diff -r a2fc624bdcc9 -r 959f8494b65e util/m5/m5.c
--- a/util/m5/m5.c	Fri Dec 16 15:31:50 2011 -0600
+++ b/util/m5/m5.c	Fri Dec 16 15:32:01 2011 -0600
@@ -160,8 +160,7 @@
     if (argc != 0)
         usage();
 
- 
-    printf("%ld", m5_initparam());
+    printf("%"PRIu64, m5_initparam());
 }
 
 void