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ArmPkg: PCD to select conduit for monitor calls 

Define a PCD 'PcdMonitorConduitHvc' to select the conduit to use for
monitor calls. PcdMonitorConduitHvc is defined as FALSE by default,
meaning the SMC conduit is enabled as default.

Adding PcdMonitorConduitHvc allows selection of HVC conduit to be used
by virtual firmware implementations.

Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
This commit is contained in:
Sami Mujawar 2022-10-28 17:32:41 +02:00 committed by mergify[bot]
parent cc650a0378
commit dcf8c79056
1 changed files with 6 additions and 1 deletions
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7
ArmPkg/ArmPkg.dec
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@ -2,7 +2,7 @@
# ARM processor package. # ARM processor package.
# #
# Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR> # Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR>
# Copyright (c) 2011 - 2021, ARM Limited. All rights reserved. # Copyright (c) 2011 - 2022, ARM Limited. All rights reserved.
# Copyright (c) 2021, Ampere Computing LLC. All rights reserved. # Copyright (c) 2021, Ampere Computing LLC. All rights reserved.
# #
# SPDX-License-Identifier: BSD-2-Clause-Patent # SPDX-License-Identifier: BSD-2-Clause-Patent
@ -134,6 +134,11 @@
# Define if the GICv3 controller should use the GICv2 legacy # Define if the GICv3 controller should use the GICv2 legacy
gArmTokenSpaceGuid.PcdArmGicV3WithV2Legacy|FALSE|BOOLEAN|0x00000042 gArmTokenSpaceGuid.PcdArmGicV3WithV2Legacy|FALSE|BOOLEAN|0x00000042
## Define the conduit to use for monitor calls.
# Default PcdMonitorConduitHvc = FALSE, conduit = SMC
# If PcdMonitorConduitHvc = TRUE, conduit = HVC
gArmTokenSpaceGuid.PcdMonitorConduitHvc|FALSE|BOOLEAN|0x00000047
[PcdsFeatureFlag.ARM] [PcdsFeatureFlag.ARM]
# Whether to map normal memory as non-shareable. FALSE is the safe choice, but # Whether to map normal memory as non-shareable. FALSE is the safe choice, but
# TRUE may be appropriate to fix performance problems if you don't care about # TRUE may be appropriate to fix performance problems if you don't care about