config: Make ex5_*.py independent of old configs

The ex5_LITTLE and ex5_big configs currently depend on Caches.py and
O3_ARM_v7a.py. These aren't actual dependencies since all of the
params from the caches and the old O3 model are overridden. This
changeset updates the ex5 models to derive from the base SimObjects
instead.

Change-Id: I999e73bb9cc21ad96865c1bc0dd5973faa48ab61
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Gabor Dozsa <gabor.dozsa@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/3942
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>

configs/common/ex5_LITTLE.py

@@ -30,8 +30,6 @@
 #          Louisa Bessad
 
 from m5.objects import *
-from O3_ARM_v7a import *
-from Caches import *
 
 #-----------------------------------------------------------------------
 #                ex5 LITTLE core (based on the ARM Cortex-A7)
@@ -97,32 +95,30 @@ class ex5_LITTLE_FUP(MinorFUPool):
 class ex5_LITTLE(MinorCPU):
     executeFuncUnits = ex5_LITTLE_FUP()
 
-class L1I(L1Cache):
+class L1Cache(Cache):
     tag_latency = 2
     data_latency = 2
     response_latency = 2
+    tgts_per_mshr = 8
+    # Consider the L2 a victim cache also for clean lines
+    writeback_clean = True
+
+class L1I(L1Cache):
     mshrs = 2
     size = '32kB'
     assoc = 2
     is_read_only = True
-    # Writeback clean lines as well
-    writeback_clean = True
+    tgts_per_mshr = 20
 
 class L1D(L1Cache):
-    tag_latency = 2
-    data_latency = 2
-    response_latency = 2
     mshrs = 4
-    tgts_per_mshr = 8
     size = '32kB'
     assoc = 4
     write_buffers = 4
-    # Consider the L2 a victim cache also for clean lines
-    writeback_clean = True
 
 # TLB Cache
 # Use a cache as a L2 TLB
-class WalkCache(PageTableWalkerCache):
+class WalkCache(Cache):
     tag_latency = 2
     data_latency = 2
     response_latency = 2
@@ -136,7 +132,7 @@ class WalkCache(PageTableWalkerCache):
     writeback_clean = True
 
 # L2 Cache
-class L2(L2Cache):
+class L2(Cache):
     tag_latency = 9
     data_latency = 9
     response_latency = 9

configs/common/ex5_big.py

@@ -30,27 +30,25 @@
 #          Louisa Bessad
 
 from m5.objects import *
-from O3_ARM_v7a import *
-from Caches import *
 
 #-----------------------------------------------------------------------
 #                ex5 big core (based on the ARM Cortex-A15)
 #-----------------------------------------------------------------------
 
 # Simple ALU Instructions have a latency of 1
-class ex5_big_Simple_Int(O3_ARM_v7a_Simple_Int):
+class ex5_big_Simple_Int(FUDesc):
     opList = [ OpDesc(opClass='IntAlu', opLat=1) ]
     count = 2
 
 # Complex ALU instructions have a variable latencies
-class ex5_big_Complex_Int(O3_ARM_v7a_Complex_Int):
+class ex5_big_Complex_Int(FUDesc):
     opList = [ OpDesc(opClass='IntMult', opLat=4, pipelined=True),
                OpDesc(opClass='IntDiv', opLat=11, pipelined=False),
                OpDesc(opClass='IprAccess', opLat=3, pipelined=True) ]
     count = 1
 
 # Floating point and SIMD instructions
-class ex5_big_FP(O3_ARM_v7a_FP):
+class ex5_big_FP(FUDesc):
     opList = [ OpDesc(opClass='SimdAdd', opLat=3),
                OpDesc(opClass='SimdAddAcc', opLat=4),
                OpDesc(opClass='SimdAlu', opLat=4),
@@ -81,21 +79,21 @@ class ex5_big_FP(O3_ARM_v7a_FP):
 
 
 # Load/Store Units
-class ex5_big_Load(O3_ARM_v7a_Load):
+class ex5_big_Load(FUDesc):
     opList = [ OpDesc(opClass='MemRead',opLat=2) ]
     count = 1
 
-class ex5_big_Store(O3_ARM_v7a_Store):
+class ex5_big_Store(FUDesc):
     opList = [OpDesc(opClass='MemWrite',opLat=2) ]
     count = 1
 
 # Functional Units for this CPU
-class ex5_big_FUP(O3_ARM_v7a_FUP):
+class ex5_big_FUP(FUPool):
     FUList = [ex5_big_Simple_Int(), ex5_big_Complex_Int(),
               ex5_big_Load(), ex5_big_Store(), ex5_big_FP()]
 
 # Bi-Mode Branch Predictor
-class ex5_big_BP(O3_ARM_v7a_BP):
+class ex5_big_BP(BiModeBP):
     globalPredictorSize = 4096
     globalCtrBits = 2
     choicePredictorSize = 1024
@@ -105,7 +103,7 @@ class ex5_big_BP(O3_ARM_v7a_BP):
     RASSize = 48
     instShiftAmt = 2
 
-class ex5_big(O3_ARM_v7a_3):
+class ex5_big(DerivO3CPU):
     LQEntries = 16
     SQEntries = 16
     LSQDepCheckShift = 0
@@ -148,35 +146,31 @@ class ex5_big(O3_ARM_v7a_3):
     switched_out = False
     branchPred = ex5_big_BP()
 
-# Instruction Cache
-class L1I(O3_ARM_v7a_ICache):
+class L1Cache(Cache):
     tag_latency = 2
     data_latency = 2
     response_latency = 2
-    mshrs = 2
     tgts_per_mshr = 8
-    size = '32kB'
-    assoc = 2
-    is_read_only = True
-    # Writeback clean lines as well
-    writeback_clean = True
-
-# Data Cache
-class L1D(O3_ARM_v7a_DCache):
-    tag_latency = 2
-    data_latency = 2
-    response_latency = 2
-    mshrs = 6
-    tgts_per_mshr = 8
-    size = '32kB'
-    assoc = 2
-    write_buffers = 16
     # Consider the L2 a victim cache also for clean lines
     writeback_clean = True
 
+# Instruction Cache
+class L1I(L1Cache):
+    mshrs = 2
+    size = '32kB'
+    assoc = 2
+    is_read_only = True
+
+# Data Cache
+class L1D(L1Cache):
+    mshrs = 6
+    size = '32kB'
+    assoc = 2
+    write_buffers = 16
+
 # TLB Cache
 # Use a cache as a L2 TLB
-class WalkCache(O3_ARM_v7aWalkCache):
+class WalkCache(Cache):
     tag_latency = 4
     data_latency = 4
     response_latency = 4
@@ -190,7 +184,7 @@ class WalkCache(O3_ARM_v7aWalkCache):
     writeback_clean = True
 
 # L2 Cache
-class L2(O3_ARM_v7aL2):
+class L2(Cache):
     tag_latency = 15
     data_latency = 15
     response_latency = 15