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-rw-r--r--configs/example/arm/fs_bigLITTLE.py35
1 files changed, 25 insertions, 10 deletions
diff --git a/configs/example/arm/fs_bigLITTLE.py b/configs/example/arm/fs_bigLITTLE.py
index 75cb44184..c542b8510 100644
--- a/configs/example/arm/fs_bigLITTLE.py
+++ b/configs/example/arm/fs_bigLITTLE.py
@@ -108,10 +108,7 @@ def createSystem(caches, kernel, bootscript, disks=[]):
return sys
-def main():
- parser = argparse.ArgumentParser(
- description="Generic ARM big.LITTLE configuration")
-
+def addOptions(parser):
parser.add_argument("--restore-from", type=str, default=None,
help="Restore from checkpoint")
parser.add_argument("--dtb", type=str, default=default_dtb,
@@ -138,10 +135,11 @@ def main():
help="Big CPU clock frequency")
parser.add_argument("--little-cpu-clock", type=str, default="1GHz",
help="Little CPU clock frequency")
+ return parser
- m5.ticks.fixGlobalFrequency()
- options = parser.parse_args()
+def build(options):
+ m5.ticks.fixGlobalFrequency()
kernel_cmd = [
"earlyprintk=pl011,0x1c090000",
@@ -208,20 +206,27 @@ def main():
# Linux device tree
system.dtb_filename = SysPaths.binary(options.dtb)
+ return root
+
+
+def instantiate(checkpoint_path=None):
# Get and load from the chkpt or simpoint checkpoint
- if options.restore_from is not None:
- m5.instantiate(options.restore_from)
+ if checkpoint_path is not None:
+ m5.util.inform("Restoring from checkpoint %s", checkpoint_path)
+ m5.instantiate(checkpoint_path)
else:
m5.instantiate()
+
+def run(checkpoint_dir=m5.options.outdir):
# start simulation (and drop checkpoints when requested)
while True:
event = m5.simulate()
exit_msg = event.getCause()
if exit_msg == "checkpoint":
print "Dropping checkpoint at tick %d" % m5.curTick()
- cpt_dir = os.path.join(m5.options.outdir, "cpt.%d" % m5.curTick())
- m5.checkpoint(os.path.join(cpt_dir))
+ cpt_dir = os.path.join(checkpoint_dir, "cpt.%d" % m5.curTick())
+ m5.checkpoint(cpt_dir)
print "Checkpoint done."
else:
print exit_msg, " @ ", m5.curTick()
@@ -230,5 +235,15 @@ def main():
sys.exit(event.getCode())
+def main():
+ parser = argparse.ArgumentParser(
+ description="Generic ARM big.LITTLE configuration")
+ addOptions(parser)
+ options = parser.parse_args()
+ root = build(options)
+ instantiate(options.restore_from)
+ run()
+
+
if __name__ == "__m5_main__":
main()