dev-arm: Move GICv3 (Re)Ditributor address in Realview.py

Base addresses for GICv3's Distributor and Redistributors are
implementation defined: they depend on the platform rather than the
model. This patch is then moving dist_addr and redist_addr
initialization in Realview.py

Change-Id: I1246df500262f4d3d5a38e62d0240945f90941ee
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/18393
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
diff --git a/src/dev/arm/Gic.py b/src/dev/arm/Gic.py
index 63ecc92..011e238 100644
--- a/src/dev/arm/Gic.py
+++ b/src/dev/arm/Gic.py
@@ -166,9 +166,9 @@
     type = 'Gicv3'
     cxx_header = "dev/arm/gic_v3.hh"
 
-    dist_addr = Param.Addr(0x2c000000, "Address for distributor")
+    dist_addr = Param.Addr("Address for distributor")
     dist_pio_delay = Param.Latency('10ns', "Delay for PIO r/w to distributor")
-    redist_addr = Param.Addr(0x2c010000, "Address for redistributors")
+    redist_addr = Param.Addr("Address for redistributors")
     redist_pio_delay = Param.Latency('10ns',
             "Delay for PIO r/w to redistributors")
     it_lines = Param.UInt32(1020,
diff --git a/src/dev/arm/RealView.py b/src/dev/arm/RealView.py
index f83f075..186d6df 100644
--- a/src/dev/arm/RealView.py
+++ b/src/dev/arm/RealView.py
@@ -1083,7 +1083,8 @@
             ]
 
 class VExpress_GEM5_V2_Base(VExpress_GEM5_Base):
-    gic = Gicv3(maint_int=ArmPPI(num=25))
+    gic = Gicv3(dist_addr=0x2c000000, redist_addr=0x2c010000,
+                maint_int=ArmPPI(num=25))
 
     # Limiting to 128 since it will otherwise overlap with PCI space
     gic.cpu_max = 128