1 files changed, 146 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/VBoxPkg/VBoxAppleSim/Cpu.c b/src/VBox/Devices/EFI/Firmware/VBoxPkg/VBoxAppleSim/Cpu.c
new file mode 100644
index 00000000..791475d3
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/VBoxPkg/VBoxAppleSim/Cpu.c
@@ -0,0 +1,146 @@
+/* $Id: Cpu.c $ */
+/** @file
+ * Cpu.c - VirtualBox CPU descriptors
+ */
+
+/*
+ * Copyright (C) 2009-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiLib.h>
+#include <Library/HiiLib.h>
+#include <Library/BaseLib.h>
+
+#include <Protocol/Cpu.h>
+
+#include "DataHub.h"
+
+#define EFI_CPU_DATA_MAXIMUM_LENGTH 0x100
+
+EFI_GUID gEfiAppleMagicHubGuid = {
+    0x64517cc8, 0x6561, 0x4051, {0xb0, 0x3c, 0x59, 0x64, 0xb6, 0x0f, 0x4c, 0x7a }
+};
+
+EFI_GUID gEfiProcessorSubClassGuid = {
+    0x26fdeb7e, 0xb8af, 0x4ccf, { 0xaa, 0x97, 0x02, 0x63, 0x3c, 0xe4, 0x8c, 0xa7 }
+};
+
+#pragma pack(1)
+typedef struct {
+    UINT8          Pad0[0x10];      /* 0x48 */
+    UINT32         NameLen;         /* 0x58 , in bytes */
+    UINT32         ValLen;          /* 0x5c */
+    UINT8          Data[1];         /* 0x60 Name Value */
+} MAGIC_HUB_DATA;
+#pragma pack()
+
+UINT32
+CopyRecord(MAGIC_HUB_DATA* Rec, const CHAR16* Name, VOID* Val, UINT32 ValLen)
+{
+    Rec->NameLen = (UINT32)StrLen(Name) * sizeof(CHAR16);
+    Rec->ValLen = ValLen;
+    CopyMem(Rec->Data, Name, Rec->NameLen);
+    CopyMem(Rec->Data + Rec->NameLen, Val, ValLen);
+
+    return 0x10 + 4 + 4 + Rec->NameLen + Rec->ValLen;
+}
+
+EFI_STATUS EFIAPI
+LogData(EFI_DATA_HUB_PROTOCOL       *DataHub,
+        MAGIC_HUB_DATA              *MagicData,
+        CHAR16                      *Name,
+        VOID                        *Data,
+        UINT32                       DataSize)
+{
+    UINT32                      RecordSize;
+    EFI_STATUS                  Status;
+
+    RecordSize = CopyRecord(MagicData, Name, Data, DataSize);
+    Status = DataHub->LogData (
+        DataHub,
+        &gEfiProcessorSubClassGuid, /* DataRecordGuid */
+        &gEfiAppleMagicHubGuid,     /* ProducerName */
+        EFI_DATA_CLASS_DATA,
+        MagicData,
+        RecordSize
+                               );
+    ASSERT_EFI_ERROR (Status);
+
+    return Status;
+}
+
+EFI_STATUS EFIAPI
+CpuUpdateDataHub(EFI_BOOT_SERVICES * bs,
+                 UINT64              FSBFrequency,
+                 UINT64              TSCFrequency,
+                 UINT64              CPUFrequency)
+{
+    EFI_STATUS                  Status;
+    EFI_DATA_HUB_PROTOCOL       *DataHub;
+    MAGIC_HUB_DATA              *MagicData;
+    UINT32                      Supported = 1;
+    //
+    // Locate DataHub protocol.
+    //
+    Status = bs->LocateProtocol (&gEfiDataHubProtocolGuid, NULL, (VOID**)&DataHub);
+    if (EFI_ERROR (Status)) {
+        return Status;
+    }
+
+    MagicData = (MAGIC_HUB_DATA*)AllocatePool (0x200);
+    if (MagicData == NULL) {
+        return EFI_OUT_OF_RESOURCES;
+    }
+
+    // Log data in format some OSes like
+    LogData(DataHub, MagicData, L"FSBFrequency", &FSBFrequency, sizeof(FSBFrequency));
+    // do that twice, as last variable read not really accounted for
+    LogData(DataHub, MagicData, L"FSBFrequency", &FSBFrequency, sizeof(FSBFrequency));
+    LogData(DataHub, MagicData, L"TSCFrequency", &TSCFrequency, sizeof(TSCFrequency));
+    LogData(DataHub, MagicData, L"CPUFrequency", &CPUFrequency, sizeof(CPUFrequency));
+
+    // The following is required for OS X to construct a SATA boot path. UEFI 2.0 (published
+    // in Jan 2006, same time as the first Intel Macs) did not standardize SATA device paths;
+    // if DevicePathsSupported is not set, OS X will create ATA boot paths which will fail
+    // to boot
+    LogData(DataHub, MagicData, L"DevicePathsSupported", &Supported, sizeof(Supported));
+
+    FreePool (MagicData);
+
+    return EFI_SUCCESS;
+}