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ArmPkg: Add support for GICv4

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Updated Redistributor base calculation to allow for the fact that
GICv4 has 2 additional 64KB frames (for VLPI and a reserved frame).
The code now tests the VLPIS bit in the GIC Redistributor Type
Register (GICR_TYPER) and calculates the Redistributor granularity
accordingly.

The code changes are:
  GICR_TYPER register fields, etc, added to the header.
  Loop updated to pay attention to GICR_TYPER.Last.
  Derive frame "stride" size from GICR_TYPER.VLPIS.

Note: The assumption is that the redistributors are adjacent for
all CPUs. However this may not be the case for NUMA systems.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
This commit is contained in:
Sami Mujawar
2018-10-09 16:35:22 +01:00
committed by Ard Biesheuvel
parent bbce001515
commit 301402fa47
3 changed files with 46 additions and 21 deletions
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5
ArmPkg/Drivers/ArmGic/ArmGicLib.inf
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@@ -1,5 +1,5 @@
#/* @file
# Copyright (c) 2011-2015, ARM Limited. All rights reserved.
# Copyright (c) 2011-2018, ARM Limited. All rights reserved.
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
@@ -44,8 +44,5 @@
ArmPlatformPkg/ArmPlatformPkg.dec
MdePkg/MdePkg.dec
[Pcd]
gArmPlatformTokenSpaceGuid.PcdCoreCount
[FeaturePcd]
gArmTokenSpaceGuid.PcdArmGicV3WithV2Legacy