From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
 roms/edk2/OvmfPkg/PlatformPei/Fv.c | 94 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 roms/edk2/OvmfPkg/PlatformPei/Fv.c

(limited to 'roms/edk2/OvmfPkg/PlatformPei/Fv.c')

diff --git a/roms/edk2/OvmfPkg/PlatformPei/Fv.c b/roms/edk2/OvmfPkg/PlatformPei/Fv.c
new file mode 100644
index 000000000..ee4ecab61
--- /dev/null
+++ b/roms/edk2/OvmfPkg/PlatformPei/Fv.c
@@ -0,0 +1,94 @@
+/** @file
+  Build FV related hobs for platform.
+
+  Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "PiPei.h"
+#include "Platform.h"
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/PcdLib.h>
+
+
+/**
+  Publish PEI & DXE (Decompressed) Memory based FVs to let PEI
+  and DXE know about them.
+
+  @retval EFI_SUCCESS   Platform PEI FVs were initialized successfully.
+
+**/
+EFI_STATUS
+PeiFvInitialization (
+  VOID
+  )
+{
+  BOOLEAN SecureS3Needed;
+
+  DEBUG ((DEBUG_INFO, "Platform PEI Firmware Volume Initialization\n"));
+
+  //
+  // Create a memory allocation HOB for the PEI FV.
+  //
+  // Allocate as ACPI NVS is S3 is supported
+  //
+  BuildMemoryAllocationHob (
+    PcdGet32 (PcdOvmfPeiMemFvBase),
+    PcdGet32 (PcdOvmfPeiMemFvSize),
+    mS3Supported ? EfiACPIMemoryNVS : EfiBootServicesData
+    );
+
+  //
+  // Let DXE know about the DXE FV
+  //
+  BuildFvHob (PcdGet32 (PcdOvmfDxeMemFvBase), PcdGet32 (PcdOvmfDxeMemFvSize));
+
+  SecureS3Needed = mS3Supported && FeaturePcdGet (PcdSmmSmramRequire);
+
+  //
+  // Create a memory allocation HOB for the DXE FV.
+  //
+  // If "secure" S3 is needed, then SEC will decompress both PEI and DXE
+  // firmware volumes at S3 resume too, hence we need to keep away the OS from
+  // DXEFV as well. Otherwise we only need to keep away DXE itself from the
+  // DXEFV area.
+  //
+  BuildMemoryAllocationHob (
+    PcdGet32 (PcdOvmfDxeMemFvBase),
+    PcdGet32 (PcdOvmfDxeMemFvSize),
+    SecureS3Needed ? EfiACPIMemoryNVS : EfiBootServicesData
+    );
+
+  //
+  // Additionally, said decompression will use temporary memory above the end
+  // of DXEFV, so let's keep away the OS from there too.
+  //
+  if (SecureS3Needed) {
+    UINT32 DxeMemFvEnd;
+
+    DxeMemFvEnd = PcdGet32 (PcdOvmfDxeMemFvBase) +
+                  PcdGet32 (PcdOvmfDxeMemFvSize);
+    BuildMemoryAllocationHob (
+      DxeMemFvEnd,
+      PcdGet32 (PcdOvmfDecompressionScratchEnd) - DxeMemFvEnd,
+      EfiACPIMemoryNVS
+      );
+  }
+
+  //
+  // Let PEI know about the DXE FV so it can find the DXE Core
+  //
+  PeiServicesInstallFvInfoPpi (
+    NULL,
+    (VOID *)(UINTN) PcdGet32 (PcdOvmfDxeMemFvBase),
+    PcdGet32 (PcdOvmfDxeMemFvSize),
+    NULL,
+    NULL
+    );
+
+  return EFI_SUCCESS;
+}
+
-- 
cgit 1.2.3-korg