To support Arm CCA, a hook function ArmCcaConfigureMmio () has
been added to the ArmVirtMemInfoLib library.
Since, Arm CCA has not been enabled for the Qemu guest firmware,
update the QemuVirtMemInfoLib library to add a NULL implementation
for ArmCcaConfigureMmio () that returns RETURN_UNSUPPORTED.
Cc: Ard Biesheuvel <ardb+tianoc...@kernel.org>
Cc: Leif Lindholm <quic_llind...@quicinc.com>
Cc: Gerd Hoffmann <kra...@redhat.com>
Signed-off-by: Sami Mujawar <sami.muja...@arm.com>
---
ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c | 21
++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
index
62fa62e5f04668227f7412252212e0462114f85a..18fc8a4447bda601d144c240cb2d355d99321aa5
100644
--- a/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
+++ b/ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.c
@@ -1,6 +1,7 @@
/** @file
Copyright (c) 2014-2017, Linaro Limited. All rights reserved.
+ Copyright (c) 2023, Arm Limited. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -122,3 +123,23 @@ ArmVirtGetMemoryMap (
*VirtualMemoryMap = VirtualMemoryTable;
}
+
+/**
+ Configure the MMIO regions as shared with the VMM.
+
+ Set the protection attribute for the MMIO regions as Unprotected IPA.
+
+ @param[in] IpaWidth IPA width of the Realm.
+
+ @retval RETURN_SUCCESS Success.
+ @retval RETURN_INVALID_PARAMETER A parameter is invalid.
+ @retval RETURN_UNSUPPORTED The execution context is not in a Realm.
+**/
+EFI_STATUS
+EFIAPI
+ArmCcaConfigureMmio (
+ IN UINT64 IpaWidth
+ )
+{
+ return RETURN_UNSUPPORTED;
+}
--
'Guid(CE165669-3EF3-493F-B85D-6190EE5B9759)'
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