sim: Adding thermal model support

This patch adds basic thermal support to gem5. It models energy dissipation
through a circuital equivalent, which allows us to use RC networks.
This lays down the basic infrastructure to do so, but it does not "work" due
to the lack of power models. For now some hardcoded number is used as a PoC.
The solver is embedded in the patch.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/sim/System.py b/src/sim/System.py
index 15c1a2662..0d0251646 100644
--- a/src/sim/System.py
+++ b/src/sim/System.py
@@ -59,6 +59,10 @@ class System(MemObject):
                                           "All memories in the system")
     mem_mode = Param.MemoryMode('atomic', "The mode the memory system is in")
 
+    thermal_model = Param.ThermalModel(NULL, "Thermal model")
+    thermal_components = VectorParam.SimObject([],
+            "A collection of all thermal components in the system.")
+
     # When reserving memory on the host, we have the option of
     # reserving swap space or not (by passing MAP_NORESERVE to
     # mmap). By enabling this flag, we accomodate cases where a large