arm, config: added support for ex5 model of big.LITTLE

This patch enables using calibrated big and LITTLE cores, ex5_big and
ex5_LITTLE instead of the default 'arm_detailed' and 'minor' cpus. The ex5
model is based on the Samsung Exynos 5 Octa (5422) SoC. Operation and memory
hierarchy latencies have been calibrated using the lmbench micro-benchmark
suite. The preliminary validation results have been published as: 'Full-System
Simulation of big.LITTLE Multicore Architecture for Performance and Energy
Exploration', in International Symposium on Embedded Multicore/Many-core
Systems-on-Chip (MCSoC'16), Lyon, France (Sep, 2016).

From http://reviews.gem5.org/r/3666

Change-Id: I4935dee0a9222bd1bf7adfccb9443014945bb2d7
Signed-off-by: Anastasiia Butko <abutko@lbl.gov>
Signed-off-by: Pierre-Yves Péneau <pierre-yves.peneau@lirmm.fr>
Reviewed-on: https://gem5-review.googlesource.com/2464
Reviewed-by: Gabor Dozsa <gabor.dozsa@arm.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/configs/common/CpuConfig.py b/configs/common/CpuConfig.py
index 8810622aa..28267c7dd 100644
--- a/configs/common/CpuConfig.py
+++ b/configs/common/CpuConfig.py
@@ -117,6 +117,20 @@ try:
 except:
     pass
 
+# The calibrated ex5-model cores
+try:
+    from ex5_LITTLE import ex5_LITTLE
+    _cpu_classes["ex5_LITTLE"] = ex5_LITTLE
+except:
+     pass
+
+try:
+    from ex5_big import ex5_big
+    _cpu_classes["ex5_big"] = ex5_big
+except:
+     pass
+
+
 # Add all CPUs in the object hierarchy.
 for name, cls in inspect.getmembers(m5.objects, is_cpu_class):
     _cpu_classes[name] = cls