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audk/ArmPkg/Library/ArmMonitorLib/ArmMonitorLib.inf

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ArmPkg/ArmMonitorLib: Add ArmMonitorLib The ArmMonitorLib provides an abstract interface to issue an HyperVisor Call (HVC) or System Monitor Call (SMC) depending on the default conduit. The PcdMonitorConduitHvc PCD allows to select the default conduit. Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com> Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
2022-10-28 17:32:43 +02:00
## @file
# Arm Monitor Library
#
# Copyright (c) 2022, Arm Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
##
[Defines]
INF_VERSION = 1.29
BASE_NAME = ArmMonitorLib
FILE_GUID = F918DACB-FBB8-4CB6-A61D-08E75AF0E7CD
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = ArmMonitorLib
ArmPkg/ArmMonitorLib: Implement SMCCC protocol correctly and directly The SMCCC protocol stipulates the following: - on AARCH64, 18 arguments can be passed, and 18 values can be returned, via registers X0-x17; - on ARM, 8 arguments can be passed, and 8 values can be returned. This makes ArmSmcLib and ArmHvcLib as implemented currently unsuitable for use with SMCCC services in general, although for PSCI in particular, they work fine. The dependency on both ArmSmcLib and ArmHvcLib is also impractical because it requires every platform that consumes ArmMonitorLib to provide resolutions for each, even though most platforms will only ever need one of these (and the choice is made at compile time) So let's drop these dependencies, and re-implement the asm helpers from scratch. Note that the only difference is the actual instruction used -HVC vs SMC- and so all other code can be shared. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2024-07-24 23:33:08 +02:00
[Sources.ARM]
Arm/ArmMonitorLib.S
[Sources.AARCH64]
AArch64/ArmMonitorLib.S
ArmPkg/ArmMonitorLib: Add ArmMonitorLib The ArmMonitorLib provides an abstract interface to issue an HyperVisor Call (HVC) or System Monitor Call (SMC) depending on the default conduit. The PcdMonitorConduitHvc PCD allows to select the default conduit. Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com> Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
2022-10-28 17:32:43 +02:00
[Packages]
ArmPkg/ArmPkg.dec
MdePkg/MdePkg.dec
[Pcd]
gArmTokenSpaceGuid.PcdMonitorConduitHvc