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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
commitf215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch)
tree6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Devices/EFI/Firmware/EmbeddedPkg/EmbeddedMonotonicCounter
parentInitial commit. (diff)
downloadvirtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz
virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/EmbeddedPkg/EmbeddedMonotonicCounter')
-rw-r--r--src/VBox/Devices/EFI/Firmware/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.c76
-rw-r--r--src/VBox/Devices/EFI/Firmware/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.inf35
2 files changed, 111 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.c b/src/VBox/Devices/EFI/Firmware/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.c
new file mode 100644
index 00000000..cf87f2df
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.c
@@ -0,0 +1,76 @@
+/** @file
+
+ Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi.h>
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+
+#include <Protocol/MonotonicCounter.h>
+
+UINT64 gCurrentMonotonicCount = 0;
+
+EFI_STATUS
+EFIAPI
+GetNextMonotonicCount (
+ OUT UINT64 *Count
+ )
+{
+ if (Count == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *Count = gCurrentMonotonicCount++;
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
+GetNextHighMonotonicCount (
+ OUT UINT32 *HighCount
+ )
+{
+ if (HighCount == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ gCurrentMonotonicCount += 0x0000000100000000ULL;
+
+ *HighCount = (UINT32)RShiftU64 (gCurrentMonotonicCount, 32) & 0xFFFFFFFF;
+
+ return EFI_SUCCESS;
+}
+
+
+EFI_STATUS
+EFIAPI
+MonotonicCounterDriverInitialize (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE Handle = NULL;
+
+ // Make sure the Monotonic Counter Architectural Protocol is not already installed in the system
+ ASSERT_PROTOCOL_ALREADY_INSTALLED(NULL, &gEfiMonotonicCounterArchProtocolGuid);
+
+ // Fill in the EFI Boot Services and EFI Runtime Services Monotonic Counter Fields
+ gBS->GetNextMonotonicCount = GetNextMonotonicCount;
+ gRT->GetNextHighMonotonicCount = GetNextHighMonotonicCount;
+
+ // Install the Monotonic Counter Architectural Protocol onto a new handle
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Handle,
+ &gEfiMonotonicCounterArchProtocolGuid, NULL,
+ NULL
+ );
+ return Status;
+}
diff --git a/src/VBox/Devices/EFI/Firmware/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.inf b/src/VBox/Devices/EFI/Firmware/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.inf
new file mode 100644
index 00000000..0ca9a8cb
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/EmbeddedPkg/EmbeddedMonotonicCounter/EmbeddedMonotonicCounter.inf
@@ -0,0 +1,35 @@
+#/** @file
+#
+# Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = EmbeddedMonotonicCounter
+ FILE_GUID = FCABE6A7-7953-4A84-B7EC-D29E89B62E87
+ MODULE_TYPE = DXE_RUNTIME_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT = MonotonicCounterDriverInitialize
+
+[Sources.common]
+ EmbeddedMonotonicCounter.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ BaseLib
+ DebugLib
+ UefiBootServicesTableLib
+ UefiDriverEntryPoint
+ UefiRuntimeServicesTableLib
+
+[Protocols]
+ gEfiMonotonicCounterArchProtocolGuid
+
+[Depex]
+ TRUE
+