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dev-arm: modify GICv3 ITS default addr

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The current default base address for GICv3 ITS stated in RealView is
0x2c120000. The redistributors base address is 0x2c010000; each
instantiated core has an associated redistributor with memory region
size 0x40000 (with GICv4 extension, enabled by default). With 8 cores,
the redistributor range spans to 0x2c210000, creating a conflict with
the ITS address space.

This patch changes the ITS base address to 0x2e010000 which guarantees
no overlapping with the redistributor.

Change-Id: I7dc1af9e69ac037f85ae96f0985554f1fb8372a0
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/20608
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit is contained in:
Adrian Herrera
2019-08-22 14:18:37 +01:00
committed by Giacomo Travaglini
parent 0a81382970
commit 69097ceac8
1 changed files with 1 additions and 1 deletions
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2
src/dev/arm/RealView.py
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@@ -1098,7 +1098,7 @@ class VExpress_GEM5_V1(VExpress_GEM5_V1_Base):
class VExpress_GEM5_V2_Base(VExpress_GEM5_Base):
gic = Gicv3(dist_addr=0x2c000000, redist_addr=0x2c010000,
maint_int=ArmPPI(num=25),
its=Gicv3Its(pio_addr=0x2c120000))
its=Gicv3Its(pio_addr=0x2e010000))
# Limiting to 128 since it will otherwise overlap with PCI space
gic.cpu_max = 128