diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/OvmfPkg/PlatformPei/Fv.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/OvmfPkg/PlatformPei/Fv.c')
| -rw-r--r-- | roms/edk2/OvmfPkg/PlatformPei/Fv.c | 94 |
1 files changed, 94 insertions, 0 deletions
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;
+}
+
|