stdlib: Add the MinorCPU type to the stdlib

Issue-on: https://gem5.atlassian.net/browse/GEM5-1161
Change-Id: I849f164bb33bde9e5d29bbd1d8c74a9193d29daf
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/57689
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/python/gem5/components/processors/abstract_core.py

@@ -136,7 +136,8 @@ class AbstractCore(SubSystem):
             CPUTypes.ATOMIC : "AtomicSimpleCPU",
             CPUTypes.O3 : "O3CPU",
             CPUTypes.TIMING : "TimingSimpleCPU",
-            CPUTypes.KVM : "KvmCPU"
+            CPUTypes.KVM : "KvmCPU",
+            CPUTypes.MINOR : "MinorCPU",
         }
 
         if isa not in _isa_string_map:

src/python/gem5/components/processors/cpu_types.py

@@ -32,3 +32,4 @@ class CPUTypes(Enum):
     KVM = 2
     O3 = 3
     TIMING = 4
+    MINOR = 5

src/python/gem5/components/processors/simple_processor.py

@@ -92,7 +92,7 @@ class SimpleProcessor(AbstractProcessor):
             board.kvm_vm = self.kvm_vm
 
         # Set the memory mode.
-        if self._cpu_type == CPUTypes.TIMING or self._cpu_type == CPUTypes.O3:
+        if self._cpu_type in (CPUTypes.TIMING, CPUTypes.O3, CPUTypes.MINOR):
             board.set_mem_mode(MemMode.TIMING)
         elif self._cpu_type == CPUTypes.KVM:
             board.set_mem_mode(MemMode.ATOMIC_NONCACHING)