[edk2-devel] [edk2-staging/RiscV64QemuVirt PATCH V4 10/34] OvmfPkg/Sec: Add RISC-V support
Sunil V L
sunilvl at ventanamicro.com
Fri Oct 14 16:48:12 UTC 2022
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4076
Add the SEC module for RISC-V. EDK2 is launched as the payload
for machine mode firmware in RISC-V.
Cc: Ard Biesheuvel <ardb+tianocore at kernel.org>
Cc: Jiewen Yao <jiewen.yao at intel.com>
Cc: Jordan Justen <jordan.l.justen at intel.com>
Cc: Gerd Hoffmann <kraxel at redhat.com>
Cc: Brijesh Singh <brijesh.singh at amd.com>
Cc: Erdem Aktas <erdemaktas at google.com>
Cc: James Bottomley <jejb at linux.ibm.com>
Cc: Min Xu <min.m.xu at intel.com>
Cc: Tom Lendacky <thomas.lendacky at amd.com>
Cc: Daniel Schaefer <git at danielschaefer.me>
Signed-off-by: Sunil V L <sunilvl at ventanamicro.com>
---
OvmfPkg/Sec/SecMain.inf | 16 +-
OvmfPkg/Sec/RiscV64/SecMain.h | 65 +++
OvmfPkg/Sec/RiscV64/SecMain.c | 573 ++++++++++++++++++++
OvmfPkg/Sec/RiscV64/SecEntry.S | 23 +
4 files changed, 676 insertions(+), 1 deletion(-)
diff --git a/OvmfPkg/Sec/SecMain.inf b/OvmfPkg/Sec/SecMain.inf
index a014bcb4cf1a..96fcc464c0d5 100644
--- a/OvmfPkg/Sec/SecMain.inf
+++ b/OvmfPkg/Sec/SecMain.inf
@@ -18,7 +18,7 @@ [Defines]
#
# The following information is for reference only and not required by the build tools.
#
-# VALID_ARCHITECTURES = IA32 X64 EBC
+# VALID_ARCHITECTURES = IA32 X64 EBC RISCV64
#
[Sources.IA32, Sources.X64]
@@ -34,6 +34,13 @@ [Sources.IA32]
[Sources.X64]
X64/SecEntry.nasm
+[Sources.RISCV64]
+ SecMainCommon.c
+ SecMainCommon.h
+ RiscV64/SecEntry.S
+ RiscV64/SecMain.c
+ RiscV64/SecMain.h
+
[Packages]
MdePkg/MdePkg.dec
MdeModulePkg/MdeModulePkg.dec
@@ -61,11 +68,17 @@ [LibraryClasses.IA32, LibraryClasses.X64]
PeiServicesLib
CcProbeLib
+[LibraryClasses.RISCV64]
+ RiscVSbiLib
+
[Ppis]
gEfiTemporaryRamSupportPpiGuid # PPI ALWAYS_PRODUCED
gEfiPeiMpInitLibMpDepPpiGuid
gEfiPeiMpInitLibUpDepPpiGuid
+[Ppis.RISCV64]
+ gEfiTemporaryRamDonePpiGuid ## PRODUCES
+
[Pcd]
gUefiCpuPkgTokenSpaceGuid.PcdSevEsWorkAreaBase
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfPeiMemFvBase
@@ -88,6 +101,7 @@ [Pcd]
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecGhcbBackupBase
gUefiOvmfPkgTokenSpaceGuid.PcdTdxAcceptPageSize
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfWorkAreaBase
+ gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFdBaseAddress
[FeaturePcd]
gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire
diff --git a/OvmfPkg/Sec/RiscV64/SecMain.h b/OvmfPkg/Sec/RiscV64/SecMain.h
new file mode 100644
index 000000000000..11e3daa090b5
--- /dev/null
+++ b/OvmfPkg/Sec/RiscV64/SecMain.h
@@ -0,0 +1,65 @@
+/** @file
+ Master header file for SecCore.
+
+ Copyright (c) 2019-2022, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+ Copyright (c) 2022, Ventana Micro Systems Inc. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _SEC_MAIN_H_
+#define _SEC_MAIN_H_
+
+#include <PiPei.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugAgentLib.h>
+#include <Library/DebugLib.h>
+#include <Library/ExtractGuidedSectionLib.h>
+#include <Library/IoLib.h>
+#include <Library/HobLib.h>
+#include <Library/PcdLib.h>
+#include <Library/PeCoffExtraActionLib.h>
+#include <Library/PeCoffGetEntryPointLib.h>
+#include <Library/PeCoffLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/PeiServicesTablePointerLib.h>
+#include <Library/DebugPrintErrorLevelLib.h>
+#include <Library/PrintLib.h>
+#include <Library/BaseRiscVSbiLib.h>
+#include <Register/RiscV64/RiscVImpl.h>
+#include <Ppi/TemporaryRamDone.h>
+#include <Ppi/TemporaryRamSupport.h>
+
+#include "SecMainCommon.h"
+
+/**
+ Entry point to the C language phase of SEC. After the SEC assembly
+ code has initialized some temporary memory and set up the stack,
+ the control is transferred to this function.
+
+ @param SizeOfRam Size of the temporary memory available for use.
+ @param TempRamBase Base address of temporary ram
+ @param BootFirmwareVolume Base address of the Boot Firmware Volume.
+**/
+VOID
+NORETURN
+EFIAPI
+SecStartup (
+ IN UINTN BootHartId,
+ IN VOID *DeviceTreeAddress
+ );
+
+/**
+ Auto-generated function that calls the library constructors for all of the module's
+ dependent libraries. This function must be called by the SEC Core once a stack has
+ been established.
+
+**/
+VOID
+EFIAPI
+ProcessLibraryConstructorList (
+ VOID
+ );
+
+#endif
diff --git a/OvmfPkg/Sec/RiscV64/SecMain.c b/OvmfPkg/Sec/RiscV64/SecMain.c
new file mode 100644
index 000000000000..c8c852714a32
--- /dev/null
+++ b/OvmfPkg/Sec/RiscV64/SecMain.c
@@ -0,0 +1,573 @@
+/** @file
+ RISC-V SEC phase module.
+
+ Copyright (c) 2008 - 2015, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2022, Ventana Micro Systems Inc. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "SecMain.h"
+
+EFI_STATUS
+EFIAPI
+TemporaryRamMigration (
+ IN CONST EFI_PEI_SERVICES **PeiServices,
+ IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
+ IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
+ IN UINTN CopySize
+ );
+
+EFI_STATUS
+EFIAPI
+TemporaryRamDone (
+ VOID
+ );
+
+STATIC EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI mTemporaryRamSupportPpi = {
+ TemporaryRamMigration
+};
+
+STATIC EFI_PEI_TEMPORARY_RAM_DONE_PPI mTemporaryRamDonePpi = {
+ TemporaryRamDone
+};
+
+STATIC EFI_PEI_PPI_DESCRIPTOR mPrivateDispatchTable[] = {
+ {
+ EFI_PEI_PPI_DESCRIPTOR_PPI,
+ &gEfiTemporaryRamSupportPpiGuid,
+ &mTemporaryRamSupportPpi
+ },
+ {
+ (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
+ &gEfiTemporaryRamDonePpiGuid,
+ &mTemporaryRamDonePpi
+ },
+};
+
+/** Temporary RAM migration function.
+
+ This function migrates the data from temporary RAM to permanent
+ memory.
+
+ @param[in] PeiServices PEI service
+ @param[in] TemporaryMemoryBase Temporary memory base address
+ @param[in] PermanentMemoryBase Permanent memory base address
+ @param[in] CopySize Size to copy
+
+**/
+EFI_STATUS
+EFIAPI
+TemporaryRamMigration (
+ IN CONST EFI_PEI_SERVICES **PeiServices,
+ IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
+ IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
+ IN UINTN CopySize
+ )
+{
+ VOID *OldHeap;
+ VOID *NewHeap;
+ VOID *OldStack;
+ VOID *NewStack;
+ EFI_RISCV_FIRMWARE_CONTEXT *FirmwareContext;
+
+ DEBUG ((
+ DEBUG_INFO,
+ "%a: Temp Mem Base:0x%Lx, Permanent Mem Base:0x%Lx, CopySize:0x%Lx\n",
+ __FUNCTION__,
+ TemporaryMemoryBase,
+ PermanentMemoryBase,
+ (UINT64)CopySize
+ ));
+
+ OldHeap = (VOID *)(UINTN)TemporaryMemoryBase;
+ NewHeap = (VOID *)((UINTN)PermanentMemoryBase + (CopySize >> 1));
+
+ OldStack = (VOID *)((UINTN)TemporaryMemoryBase + (CopySize >> 1));
+ NewStack = (VOID *)(UINTN)PermanentMemoryBase;
+
+ CopyMem (NewHeap, OldHeap, CopySize >> 1); // Migrate Heap
+ CopyMem (NewStack, OldStack, CopySize >> 1); // Migrate Stack
+
+ //
+ // Reset firmware context pointer
+ //
+ GetFirmwareContextPointer (&FirmwareContext);
+ FirmwareContext = (VOID *)FirmwareContext + (unsigned long)((UINTN)NewStack - (UINTN)OldStack);
+ SetFirmwareContextPointer (FirmwareContext);
+
+ DEBUG ((DEBUG_INFO, "%a: Firmware Context is relocated to 0x%x\n", __FUNCTION__, FirmwareContext));
+
+ register UINTN a0 asm ("a0") = (UINTN)((UINTN)NewStack - (UINTN)OldStack);
+
+ asm volatile ("add sp, sp, a0"::"r"(a0):);
+ return EFI_SUCCESS;
+}
+
+/** Temprary RAM done function.
+
+**/
+EFI_STATUS EFIAPI
+TemporaryRamDone (
+ VOID
+ )
+{
+ DEBUG ((DEBUG_INFO, "%a: 2nd time PEI core, temporary ram done.\n", __FUNCTION__));
+ return EFI_SUCCESS;
+}
+
+/** Return platform SEC PPI before PEI Core
+
+ @param[in,out] ThisPpiList Pointer to retrieve EFI_PEI_PPI_DESCRIPTOR.
+
+**/
+STATIC EFI_STATUS
+GetPlatformPrePeiCorePpiDescriptor (
+ IN OUT EFI_PEI_PPI_DESCRIPTOR **ThisPpiList
+ )
+{
+ *ThisPpiList = mPrivateDispatchTable;
+ return EFI_SUCCESS;
+}
+
+/**
+ Locates the main boot firmware volume.
+
+ @param[in,out] BootFv On input, the base of the BootFv
+ On output, the decompressed main firmware volume
+
+ @retval EFI_SUCCESS The main firmware volume was located and decompressed
+ @retval EFI_NOT_FOUND The main firmware volume was not found
+
+**/
+EFI_STATUS
+FindMainFv (
+ IN OUT EFI_FIRMWARE_VOLUME_HEADER **BootFv
+ )
+{
+ EFI_FIRMWARE_VOLUME_HEADER *Fv;
+ UINTN Distance;
+
+ ASSERT (((UINTN)*BootFv & EFI_PAGE_MASK) == 0);
+
+ Fv = *BootFv;
+ Distance = (UINTN)(*BootFv)->FvLength;
+ do {
+ Fv = (EFI_FIRMWARE_VOLUME_HEADER *)((UINT8 *)Fv + EFI_PAGE_SIZE);
+ Distance += EFI_PAGE_SIZE;
+ if (Distance > SIZE_32MB) {
+ return EFI_NOT_FOUND;
+ }
+
+ if (Fv->Signature != EFI_FVH_SIGNATURE) {
+ continue;
+ }
+
+ if ((UINTN)Fv->FvLength < Distance) {
+ continue;
+ }
+
+ *BootFv = Fv;
+ return EFI_SUCCESS;
+ } while (TRUE);
+}
+
+/**
+ Locates the compressed main firmware volume and decompresses it.
+
+ @param[in,out] Fv On input, the firmware volume to search
+ On output, the decompressed BOOT/PEI FV
+
+ @retval EFI_SUCCESS The file and section was found
+ @retval EFI_NOT_FOUND The file and section was not found
+ @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted
+
+**/
+EFI_STATUS
+DecompressMemFvs (
+ IN OUT EFI_FIRMWARE_VOLUME_HEADER **Fv
+ )
+{
+ EFI_STATUS Status;
+ EFI_GUID_DEFINED_SECTION *Section;
+ UINT32 OutputBufferSize;
+ UINT32 ScratchBufferSize;
+ UINT16 SectionAttribute;
+ UINT32 AuthenticationStatus;
+ VOID *OutputBuffer;
+ VOID *ScratchBuffer;
+ EFI_COMMON_SECTION_HEADER *FvSection;
+ EFI_FIRMWARE_VOLUME_HEADER *PeiMemFv;
+ EFI_FIRMWARE_VOLUME_HEADER *DxeMemFv;
+ UINT32 FvHeaderSize;
+ UINT32 FvSectionSize;
+
+ FvSection = (EFI_COMMON_SECTION_HEADER *)NULL;
+
+ Status = FindFfsFileAndSection (
+ *Fv,
+ EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE,
+ EFI_SECTION_GUID_DEFINED,
+ (EFI_COMMON_SECTION_HEADER **)&Section
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "Unable to find GUID defined section\n"));
+ return Status;
+ }
+
+ Status = ExtractGuidedSectionGetInfo (
+ Section,
+ &OutputBufferSize,
+ &ScratchBufferSize,
+ &SectionAttribute
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "Unable to GetInfo for GUIDed section\n"));
+ return Status;
+ }
+
+ OutputBuffer = (VOID *)((UINT8 *)(UINTN)PcdGet32 (PcdOvmfDxeMemFvBase) + SIZE_1MB);
+ ScratchBuffer = ALIGN_POINTER ((UINT8 *)OutputBuffer + OutputBufferSize, SIZE_1MB);
+
+ Status = ExtractGuidedSectionDecode (
+ Section,
+ &OutputBuffer,
+ ScratchBuffer,
+ &AuthenticationStatus
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "Error during GUID section decode\n"));
+ return Status;
+ }
+
+ Status = FindFfsSectionInstance (
+ OutputBuffer,
+ OutputBufferSize,
+ EFI_SECTION_FIRMWARE_VOLUME_IMAGE,
+ 0,
+ &FvSection
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "Unable to find PEI FV section\n"));
+ return Status;
+ }
+
+ ASSERT (
+ SECTION_SIZE (FvSection) ==
+ (PcdGet32 (PcdOvmfPeiMemFvSize) + sizeof (*FvSection))
+ );
+ ASSERT (FvSection->Type == EFI_SECTION_FIRMWARE_VOLUME_IMAGE);
+
+ PeiMemFv = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdOvmfPeiMemFvBase);
+ CopyMem (PeiMemFv, (VOID *)(FvSection + 1), PcdGet32 (PcdOvmfPeiMemFvSize));
+
+ if (PeiMemFv->Signature != EFI_FVH_SIGNATURE) {
+ DEBUG ((DEBUG_ERROR, "Extracted FV at %p does not have FV header signature\n", PeiMemFv));
+ CpuDeadLoop ();
+ return EFI_VOLUME_CORRUPTED;
+ }
+
+ Status = FindFfsSectionInstance (
+ OutputBuffer,
+ OutputBufferSize,
+ EFI_SECTION_FIRMWARE_VOLUME_IMAGE,
+ 1,
+ &FvSection
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "Unable to find DXE FV section\n"));
+ return Status;
+ }
+
+ ASSERT (FvSection->Type == EFI_SECTION_FIRMWARE_VOLUME_IMAGE);
+
+ if (IS_SECTION2 (FvSection)) {
+ FvSectionSize = SECTION2_SIZE (FvSection);
+ FvHeaderSize = sizeof (EFI_COMMON_SECTION_HEADER2);
+ } else {
+ FvSectionSize = SECTION_SIZE (FvSection);
+ FvHeaderSize = sizeof (EFI_COMMON_SECTION_HEADER);
+ }
+
+ ASSERT (FvSectionSize == (PcdGet32 (PcdOvmfDxeMemFvSize) + FvHeaderSize));
+
+ DxeMemFv = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdOvmfDxeMemFvBase);
+ CopyMem (DxeMemFv, (VOID *)((UINTN)FvSection + FvHeaderSize), PcdGet32 (PcdOvmfDxeMemFvSize));
+
+ if (DxeMemFv->Signature != EFI_FVH_SIGNATURE) {
+ DEBUG ((DEBUG_ERROR, "Extracted FV at %p does not have FV header signature\n", DxeMemFv));
+ CpuDeadLoop ();
+ return EFI_VOLUME_CORRUPTED;
+ }
+
+ *Fv = PeiMemFv;
+ return EFI_SUCCESS;
+}
+
+/**
+ Locates the PEI Core entry point address
+
+ @param[in,out] Fv The firmware volume to search
+ @param[out] PeiCoreEntryPoint The entry point of the PEI Core image
+
+ @retval EFI_SUCCESS The file and section was found
+ @retval EFI_NOT_FOUND The file and section was not found
+ @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted
+
+**/
+VOID
+FindPeiCoreImageBase (
+ IN OUT EFI_FIRMWARE_VOLUME_HEADER **BootFv,
+ OUT EFI_PHYSICAL_ADDRESS *PeiCoreImageBase
+ )
+{
+ *PeiCoreImageBase = 0;
+
+ FindMainFv (BootFv);
+
+ DecompressMemFvs (BootFv);
+
+ FindPeiCoreImageBaseInFv (*BootFv, PeiCoreImageBase);
+}
+
+/**
+ Find core image base.
+
+**/
+EFI_STATUS
+FindImageBase (
+ IN EFI_FIRMWARE_VOLUME_HEADER *BootFirmwareVolumePtr,
+ OUT EFI_PHYSICAL_ADDRESS *SecCoreImageBase
+ )
+{
+ EFI_PHYSICAL_ADDRESS CurrentAddress;
+ EFI_PHYSICAL_ADDRESS EndOfFirmwareVolume;
+ EFI_FFS_FILE_HEADER *File;
+ UINT32 Size;
+ EFI_PHYSICAL_ADDRESS EndOfFile;
+ EFI_COMMON_SECTION_HEADER *Section;
+ EFI_PHYSICAL_ADDRESS EndOfSection;
+
+ *SecCoreImageBase = 0;
+
+ CurrentAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)BootFirmwareVolumePtr;
+ EndOfFirmwareVolume = CurrentAddress + BootFirmwareVolumePtr->FvLength;
+
+ //
+ // Loop through the FFS files in the Boot Firmware Volume
+ //
+ for (EndOfFile = CurrentAddress + BootFirmwareVolumePtr->HeaderLength; ; ) {
+ CurrentAddress = (EndOfFile + 7) & 0xfffffffffffffff8ULL;
+ if (CurrentAddress > EndOfFirmwareVolume) {
+ return EFI_NOT_FOUND;
+ }
+
+ File = (EFI_FFS_FILE_HEADER *)(UINTN)CurrentAddress;
+ Size = FFS_FILE_SIZE (File);
+ if (Size < sizeof (*File)) {
+ return EFI_NOT_FOUND;
+ }
+
+ EndOfFile = CurrentAddress + Size;
+ if (EndOfFile > EndOfFirmwareVolume) {
+ return EFI_NOT_FOUND;
+ }
+
+ //
+ // Look for SEC Core
+ //
+ if (File->Type != EFI_FV_FILETYPE_SECURITY_CORE) {
+ continue;
+ }
+
+ //
+ // Loop through the FFS file sections within the FFS file
+ //
+ EndOfSection = (EFI_PHYSICAL_ADDRESS)(UINTN)(File + 1);
+ for ( ; ;) {
+ CurrentAddress = (EndOfSection + 3) & 0xfffffffffffffffcULL;
+ Section = (EFI_COMMON_SECTION_HEADER *)(UINTN)CurrentAddress;
+
+ Size = SECTION_SIZE (Section);
+ if (Size < sizeof (*Section)) {
+ return EFI_NOT_FOUND;
+ }
+
+ EndOfSection = CurrentAddress + Size;
+ if (EndOfSection > EndOfFile) {
+ return EFI_NOT_FOUND;
+ }
+
+ //
+ // Look for executable sections
+ //
+ if ((Section->Type == EFI_SECTION_PE32) || (Section->Type == EFI_SECTION_TE)) {
+ if (File->Type == EFI_FV_FILETYPE_SECURITY_CORE) {
+ *SecCoreImageBase = (PHYSICAL_ADDRESS)(UINTN)(Section + 1);
+ }
+
+ break;
+ }
+ }
+
+ //
+ // SEC Core image found
+ //
+ if (*SecCoreImageBase != 0) {
+ return EFI_SUCCESS;
+ }
+ }
+}
+
+/*
+ Find and return Pei Core entry point.
+
+ It also find SEC and PEI Core file debug information. It will report them if
+ remote debug is enabled.
+
+**/
+VOID
+FindAndReportEntryPoints (
+ IN EFI_FIRMWARE_VOLUME_HEADER **BootFirmwareVolumePtr,
+ OUT EFI_PEI_CORE_ENTRY_POINT *PeiCoreEntryPoint
+ )
+{
+ EFI_STATUS Status;
+ EFI_PHYSICAL_ADDRESS SecCoreImageBase;
+ EFI_PHYSICAL_ADDRESS PeiCoreImageBase;
+ PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;
+
+ //
+ // Find SEC Core and PEI Core image base
+ //
+ Status = FindImageBase (*BootFirmwareVolumePtr, &SecCoreImageBase);
+ ASSERT_EFI_ERROR (Status);
+
+ FindPeiCoreImageBase (BootFirmwareVolumePtr, &PeiCoreImageBase);
+
+ ZeroMem ((VOID *)&ImageContext, sizeof (PE_COFF_LOADER_IMAGE_CONTEXT));
+ //
+ // Report SEC Core debug information when remote debug is enabled
+ //
+ ImageContext.ImageAddress = SecCoreImageBase;
+ ImageContext.PdbPointer = PeCoffLoaderGetPdbPointer ((VOID *)(UINTN)ImageContext.ImageAddress);
+ PeCoffLoaderRelocateImageExtraAction (&ImageContext);
+
+ //
+ // Report PEI Core debug information when remote debug is enabled
+ //
+ ImageContext.ImageAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)PeiCoreImageBase;
+ ImageContext.PdbPointer = PeCoffLoaderGetPdbPointer ((VOID *)(UINTN)ImageContext.ImageAddress);
+ PeCoffLoaderRelocateImageExtraAction (&ImageContext);
+
+ //
+ // Find PEI Core entry point
+ //
+ Status = PeCoffLoaderGetEntryPoint ((VOID *)(UINTN)PeiCoreImageBase, (VOID **)PeiCoreEntryPoint);
+ if (EFI_ERROR (Status)) {
+ *PeiCoreEntryPoint = 0;
+ }
+
+ return;
+}
+
+/**
+
+ Entry point to the C language phase of SEC. After the SEC assembly
+ code has initialized some temporary memory and set up the stack,
+ the control is transferred to this function.
+
+
+ @param[in] BootHartId Hardware thread ID of boot hart.
+ @param[in] DeviceTreeAddress Pointer to Device Tree (DTB)
+**/
+VOID
+NORETURN
+EFIAPI
+SecStartup (
+ IN UINTN BootHartId,
+ IN VOID *DeviceTreeAddress
+ )
+{
+ EFI_RISCV_FIRMWARE_CONTEXT FirmwareContext;
+ EFI_FIRMWARE_VOLUME_HEADER *BootFv;
+ EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint;
+ EFI_PEI_PPI_DESCRIPTOR *PpiList;
+ EFI_SEC_PEI_HAND_OFF SecCoreData;
+ EFI_STATUS Status;
+
+ //
+ // Report Status Code to indicate entering SEC core
+ //
+ DEBUG ((
+ DEBUG_INFO,
+ "%a() BootHartId: 0x%x, DeviceTreeAddress=0x%x\n",
+ __FUNCTION__,
+ BootHartId,
+ DeviceTreeAddress
+ ));
+
+ //
+ // Process all libraries constructor function linked to SecCore.
+ //
+ ProcessLibraryConstructorList ();
+
+ BootFv = (EFI_FIRMWARE_VOLUME_HEADER *)FixedPcdGet32 (PcdOvmfFdBaseAddress);
+
+ ASSERT (BootFv != NULL);
+ SecCoreData.DataSize = (UINT16)sizeof (EFI_SEC_PEI_HAND_OFF);
+ SecCoreData.BootFirmwareVolumeBase = BootFv;
+ SecCoreData.BootFirmwareVolumeSize = (UINTN)BootFv->FvLength;
+ SecCoreData.TemporaryRamBase = (VOID *)(UINT64)FixedPcdGet32 (PcdOvmfSecPeiTempRamBase);
+ SecCoreData.TemporaryRamSize = (UINTN)FixedPcdGet32 (PcdOvmfSecPeiTempRamSize);
+ SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;
+ SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize >> 1;
+ SecCoreData.StackBase = (UINT8 *)SecCoreData.TemporaryRamBase + (SecCoreData.TemporaryRamSize >> 1);
+ SecCoreData.StackSize = SecCoreData.TemporaryRamSize >> 1;
+
+ DEBUG ((
+ DEBUG_INFO,
+ "%a() BFV Base: 0x%x, BFV Size: 0x%x, TempRAM Base: 0x%x, TempRAM Size: 0x%x, PeiTempRamBase: 0x%x, PeiTempRamSize: 0x%x, StackBase: 0x%x, StackSize: 0x%x\n",
+ __FUNCTION__,
+ SecCoreData.BootFirmwareVolumeBase,
+ SecCoreData.BootFirmwareVolumeSize,
+ SecCoreData.TemporaryRamBase,
+ SecCoreData.TemporaryRamSize,
+ SecCoreData.PeiTemporaryRamBase,
+ SecCoreData.PeiTemporaryRamSize,
+ SecCoreData.StackBase,
+ SecCoreData.StackSize
+ ));
+
+ FindAndReportEntryPoints (
+ &BootFv,
+ &PeiCoreEntryPoint
+ );
+ if (PeiCoreEntryPoint == NULL) {
+ CpuDeadLoop ();
+ }
+
+ SecCoreData.BootFirmwareVolumeBase = BootFv;
+ SecCoreData.BootFirmwareVolumeSize = (UINTN)BootFv->FvLength;
+
+ Status = GetPlatformPrePeiCorePpiDescriptor (&PpiList);
+ if (EFI_ERROR (Status)) {
+ PpiList = NULL;
+ }
+
+ FirmwareContext.BootHartId = BootHartId;
+ FirmwareContext.FlattenedDeviceTree = (UINT64)DeviceTreeAddress;
+ SetFirmwareContextPointer (&FirmwareContext);
+
+ //
+ // Transfer the control to the PEI core
+ //
+ ASSERT (PeiCoreEntryPoint != NULL);
+ (*PeiCoreEntryPoint)(&SecCoreData, PpiList);
+
+ //
+ // Should not come here.
+ //
+ UNREACHABLE ();
+}
diff --git a/OvmfPkg/Sec/RiscV64/SecEntry.S b/OvmfPkg/Sec/RiscV64/SecEntry.S
new file mode 100644
index 000000000000..d201e9f8a608
--- /dev/null
+++ b/OvmfPkg/Sec/RiscV64/SecEntry.S
@@ -0,0 +1,23 @@
+/*
+ Copyright (c) 2021-2022 , Hewlett Packard Enterprise Development LP. All rights reserved.
+ Copyright (c) 2019 Western Digital Corporation or its affiliates.
+ Copyright (c) 2022 Ventana Micro Systems Inc.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ */
+
+#include "SecMain.h"
+
+.text
+.align 3
+
+ASM_FUNC (_ModuleEntryPoint)
+ /* Use Temp memory as the stack for calling to C code */
+ li a4, FixedPcdGet32 (PcdOvmfSecPeiTempRamBase)
+ li a5, FixedPcdGet32 (PcdOvmfSecPeiTempRamSize)
+
+ /* Use Temp memory as the stack for calling to C code */
+ add sp, a4, a5
+
+ call SecStartup
--
2.38.0
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