diff options
Diffstat (limited to 'OvmfPkg/Sec/SecMain.c')
| -rw-r--r-- | OvmfPkg/Sec/SecMain.c | 892 |
1 files changed, 0 insertions, 892 deletions
diff --git a/OvmfPkg/Sec/SecMain.c b/OvmfPkg/Sec/SecMain.c deleted file mode 100644 index b7df549f31..0000000000 --- a/OvmfPkg/Sec/SecMain.c +++ /dev/null @@ -1,892 +0,0 @@ -/** @file
- Main SEC phase code. Transitions to PEI.
-
- Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
-
- This program and the accompanying materials
- are licensed and made available under the terms and conditions of the BSD License
- which accompanies this distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include <PiPei.h>
-
-#include <Library/PeimEntryPoint.h>
-#include <Library/BaseLib.h>
-#include <Library/DebugLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/PeiServicesLib.h>
-#include <Library/PcdLib.h>
-#include <Library/UefiCpuLib.h>
-#include <Library/DebugAgentLib.h>
-#include <Library/IoLib.h>
-#include <Library/PeCoffLib.h>
-#include <Library/PeCoffGetEntryPointLib.h>
-#include <Library/PeCoffExtraActionLib.h>
-#include <Library/ExtractGuidedSectionLib.h>
-
-#include <Ppi/TemporaryRamSupport.h>
-
-#define SEC_IDT_ENTRY_COUNT 34
-
-typedef struct _SEC_IDT_TABLE {
- EFI_PEI_SERVICES *PeiService;
- IA32_IDT_GATE_DESCRIPTOR IdtTable[SEC_IDT_ENTRY_COUNT];
-} SEC_IDT_TABLE;
-
-VOID
-EFIAPI
-SecStartupPhase2 (
- IN VOID *Context
- );
-
-EFI_STATUS
-EFIAPI
-TemporaryRamMigration (
- IN CONST EFI_PEI_SERVICES **PeiServices,
- IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
- IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
- IN UINTN CopySize
- );
-
-//
-//
-//
-EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI mTemporaryRamSupportPpi = {
- TemporaryRamMigration
-};
-
-EFI_PEI_PPI_DESCRIPTOR mPrivateDispatchTable[] = {
- {
- (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
- &gEfiTemporaryRamSupportPpiGuid,
- &mTemporaryRamSupportPpi
- },
-};
-
-//
-// Template of an IDT entry pointing to 10:FFFFFFE4h.
-//
-IA32_IDT_GATE_DESCRIPTOR mIdtEntryTemplate = {
- { // Bits
- 0xffe4, // OffsetLow
- 0x10, // Selector
- 0x0, // Reserved_0
- IA32_IDT_GATE_TYPE_INTERRUPT_32, // GateType
- 0xffff // OffsetHigh
- }
-};
-
-/**
- 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 a section within a series of sections
- with the specified section type.
-
- The Instance parameter indicates which instance of the section
- type to return. (0 is first instance, 1 is second...)
-
- @param[in] Sections The sections to search
- @param[in] SizeOfSections Total size of all sections
- @param[in] SectionType The section type to locate
- @param[in] Instance The section instance number
- @param[out] FoundSection The FFS section if found
-
- @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
-FindFfsSectionInstance (
- IN VOID *Sections,
- IN UINTN SizeOfSections,
- IN EFI_SECTION_TYPE SectionType,
- IN UINTN Instance,
- OUT EFI_COMMON_SECTION_HEADER **FoundSection
- )
-{
- EFI_PHYSICAL_ADDRESS CurrentAddress;
- UINT32 Size;
- EFI_PHYSICAL_ADDRESS EndOfSections;
- EFI_COMMON_SECTION_HEADER *Section;
- EFI_PHYSICAL_ADDRESS EndOfSection;
-
- //
- // Loop through the FFS file sections within the PEI Core FFS file
- //
- EndOfSection = (EFI_PHYSICAL_ADDRESS)(UINTN) Sections;
- EndOfSections = EndOfSection + SizeOfSections;
- for (;;) {
- if (EndOfSection == EndOfSections) {
- break;
- }
- CurrentAddress = (EndOfSection + 3) & ~(3ULL);
- if (CurrentAddress >= EndOfSections) {
- return EFI_VOLUME_CORRUPTED;
- }
-
- Section = (EFI_COMMON_SECTION_HEADER*)(UINTN) CurrentAddress;
-
- Size = SECTION_SIZE (Section);
- if (Size < sizeof (*Section)) {
- return EFI_VOLUME_CORRUPTED;
- }
-
- EndOfSection = CurrentAddress + Size;
- if (EndOfSection > EndOfSections) {
- return EFI_VOLUME_CORRUPTED;
- }
-
- //
- // Look for the requested section type
- //
- if (Section->Type == SectionType) {
- if (Instance == 0) {
- *FoundSection = Section;
- return EFI_SUCCESS;
- } else {
- Instance--;
- }
- }
- }
-
- return EFI_NOT_FOUND;
-}
-
-/**
- Locates a section within a series of sections
- with the specified section type.
-
- @param[in] Sections The sections to search
- @param[in] SizeOfSections Total size of all sections
- @param[in] SectionType The section type to locate
- @param[out] FoundSection The FFS section if found
-
- @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
-FindFfsSectionInSections (
- IN VOID *Sections,
- IN UINTN SizeOfSections,
- IN EFI_SECTION_TYPE SectionType,
- OUT EFI_COMMON_SECTION_HEADER **FoundSection
- )
-{
- return FindFfsSectionInstance (
- Sections,
- SizeOfSections,
- SectionType,
- 0,
- FoundSection
- );
-}
-
-/**
- Locates a FFS file with the specified file type and a section
- within that file with the specified section type.
-
- @param[in] Fv The firmware volume to search
- @param[in] FileType The file type to locate
- @param[in] SectionType The section type to locate
- @param[out] FoundSection The FFS section if found
-
- @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
-FindFfsFileAndSection (
- IN EFI_FIRMWARE_VOLUME_HEADER *Fv,
- IN EFI_FV_FILETYPE FileType,
- IN EFI_SECTION_TYPE SectionType,
- OUT EFI_COMMON_SECTION_HEADER **FoundSection
- )
-{
- EFI_STATUS Status;
- EFI_PHYSICAL_ADDRESS CurrentAddress;
- EFI_PHYSICAL_ADDRESS EndOfFirmwareVolume;
- EFI_FFS_FILE_HEADER *File;
- UINT32 Size;
- EFI_PHYSICAL_ADDRESS EndOfFile;
-
- if (Fv->Signature != EFI_FVH_SIGNATURE) {
- DEBUG ((EFI_D_ERROR, "FV at %p does not have FV header signature\n", Fv));
- return EFI_VOLUME_CORRUPTED;
- }
-
- CurrentAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) Fv;
- EndOfFirmwareVolume = CurrentAddress + Fv->FvLength;
-
- //
- // Loop through the FFS files in the Boot Firmware Volume
- //
- for (EndOfFile = CurrentAddress + Fv->HeaderLength; ; ) {
-
- CurrentAddress = (EndOfFile + 7) & ~(7ULL);
- if (CurrentAddress > EndOfFirmwareVolume) {
- return EFI_VOLUME_CORRUPTED;
- }
-
- File = (EFI_FFS_FILE_HEADER*)(UINTN) CurrentAddress;
- Size = *(UINT32*) File->Size & 0xffffff;
- if (Size < (sizeof (*File) + sizeof (EFI_COMMON_SECTION_HEADER))) {
- return EFI_VOLUME_CORRUPTED;
- }
-
- EndOfFile = CurrentAddress + Size;
- if (EndOfFile > EndOfFirmwareVolume) {
- return EFI_VOLUME_CORRUPTED;
- }
-
- //
- // Look for the request file type
- //
- if (File->Type != FileType) {
- continue;
- }
-
- Status = FindFfsSectionInSections (
- (VOID*) (File + 1),
- (UINTN) EndOfFile - (UINTN) (File + 1),
- SectionType,
- FoundSection
- );
- if (!EFI_ERROR (Status) || (Status == EFI_VOLUME_CORRUPTED)) {
- return Status;
- }
- }
-}
-
-/**
- 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_FIRMWARE_VOLUME_IMAGE_SECTION *FvSection;
- EFI_FIRMWARE_VOLUME_HEADER *PeiMemFv;
- EFI_FIRMWARE_VOLUME_HEADER *DxeMemFv;
-
- FvSection = (EFI_FIRMWARE_VOLUME_IMAGE_SECTION*) NULL;
-
- Status = FindFfsFileAndSection (
- *Fv,
- EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE,
- EFI_SECTION_GUID_DEFINED,
- (EFI_COMMON_SECTION_HEADER**) &Section
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "Unable to find GUID defined section\n"));
- return Status;
- }
-
- Status = ExtractGuidedSectionGetInfo (
- Section,
- &OutputBufferSize,
- &ScratchBufferSize,
- &SectionAttribute
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_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 ((EFI_D_ERROR, "Error during GUID section decode\n"));
- return Status;
- }
-
- Status = FindFfsSectionInstance (
- OutputBuffer,
- OutputBufferSize,
- EFI_SECTION_FIRMWARE_VOLUME_IMAGE,
- 0,
- (EFI_COMMON_SECTION_HEADER**) &FvSection
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_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 ((EFI_D_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,
- (EFI_COMMON_SECTION_HEADER**) &FvSection
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "Unable to find DXE FV section\n"));
- return Status;
- }
-
- ASSERT (FvSection->Type == EFI_SECTION_FIRMWARE_VOLUME_IMAGE);
- ASSERT (SECTION_SIZE (FvSection) ==
- (PcdGet32 (PcdOvmfDxeMemFvSize) + sizeof (*FvSection)));
-
- DxeMemFv = (EFI_FIRMWARE_VOLUME_HEADER*)(UINTN) PcdGet32 (PcdOvmfDxeMemFvBase);
- CopyMem (DxeMemFv, (VOID*) (FvSection + 1), PcdGet32 (PcdOvmfDxeMemFvSize));
-
- if (DxeMemFv->Signature != EFI_FVH_SIGNATURE) {
- DEBUG ((EFI_D_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] 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
-
-**/
-EFI_STATUS
-FindPeiCoreImageBaseInFv (
- IN EFI_FIRMWARE_VOLUME_HEADER *Fv,
- OUT EFI_PHYSICAL_ADDRESS *PeiCoreImageBase
- )
-{
- EFI_STATUS Status;
- EFI_COMMON_SECTION_HEADER *Section;
-
- Status = FindFfsFileAndSection (
- Fv,
- EFI_FV_FILETYPE_PEI_CORE,
- EFI_SECTION_PE32,
- &Section
- );
- if (EFI_ERROR (Status)) {
- Status = FindFfsFileAndSection (
- Fv,
- EFI_FV_FILETYPE_PEI_CORE,
- EFI_SECTION_TE,
- &Section
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "Unable to find PEI Core image\n"));
- return Status;
- }
- }
-
- *PeiCoreImageBase = (EFI_PHYSICAL_ADDRESS)(UINTN)(Section + 1);
- return EFI_SUCCESS;
-}
-
-
-/**
- Reads 8-bits of CMOS data.
-
- Reads the 8-bits of CMOS data at the location specified by Index.
- The 8-bit read value is returned.
-
- @param Index The CMOS location to read.
-
- @return The value read.
-
-**/
-STATIC
-UINT8
-CmosRead8 (
- IN UINTN Index
- )
-{
- IoWrite8 (0x70, (UINT8) Index);
- return IoRead8 (0x71);
-}
-
-
-STATIC
-BOOLEAN
-IsS3Resume (
- VOID
- )
-{
- return (CmosRead8 (0xF) == 0xFE);
-}
-
-
-STATIC
-EFI_STATUS
-GetS3ResumePeiFv (
- IN OUT EFI_FIRMWARE_VOLUME_HEADER **PeiFv
- )
-{
- *PeiFv = (EFI_FIRMWARE_VOLUME_HEADER*)(UINTN) PcdGet32 (PcdOvmfPeiMemFvBase);
- 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;
-
- if (IsS3Resume ()) {
- DEBUG ((EFI_D_VERBOSE, "SEC: S3 resume\n"));
- GetS3ResumePeiFv (BootFv);
- } else {
- DEBUG ((EFI_D_VERBOSE, "SEC: Normal boot\n"));
- 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 = *(UINT32*) File->Size & 0xffffff;
- 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 = *(UINT32*) Section->Size & 0xffffff;
- 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 inforamtion. 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;
-}
-
-VOID
-EFIAPI
-SecCoreStartupWithStack (
- IN EFI_FIRMWARE_VOLUME_HEADER *BootFv,
- IN VOID *TopOfCurrentStack
- )
-{
- EFI_SEC_PEI_HAND_OFF SecCoreData;
- SEC_IDT_TABLE IdtTableInStack;
- IA32_DESCRIPTOR IdtDescriptor;
- UINT32 Index;
-
- ProcessLibraryConstructorList (NULL, NULL);
-
- DEBUG ((EFI_D_INFO,
- "SecCoreStartupWithStack(0x%x, 0x%x)\n",
- (UINT32)(UINTN)BootFv,
- (UINT32)(UINTN)TopOfCurrentStack
- ));
-
- //
- // Initialize floating point operating environment
- // to be compliant with UEFI spec.
- //
- InitializeFloatingPointUnits ();
-
- //
- // Initialize IDT
- //
- IdtTableInStack.PeiService = NULL;
- for (Index = 0; Index < SEC_IDT_ENTRY_COUNT; Index ++) {
- CopyMem (&IdtTableInStack.IdtTable[Index], &mIdtEntryTemplate, sizeof (mIdtEntryTemplate));
- }
-
- IdtDescriptor.Base = (UINTN)&IdtTableInStack.IdtTable;
- IdtDescriptor.Limit = (UINT16)(sizeof (IdtTableInStack.IdtTable) - 1);
-
- AsmWriteIdtr (&IdtDescriptor);
-
-#if defined (MDE_CPU_X64)
- //
- // ASSERT that the Page Tables were set by the reset vector code to
- // the address we expect.
- //
- ASSERT (AsmReadCr3 () == (UINTN) PcdGet32 (PcdOvmfSecPageTablesBase));
-#endif
-
- //
- // |-------------| <-- TopOfCurrentStack
- // | Stack | 32k
- // |-------------|
- // | Heap | 32k
- // |-------------| <-- SecCoreData.TemporaryRamBase
- //
-
- ASSERT ((UINTN) (PcdGet32 (PcdOvmfSecPeiTempRamBase) +
- PcdGet32 (PcdOvmfSecPeiTempRamSize)) ==
- (UINTN) TopOfCurrentStack);
-
- //
- // Initialize SEC hand-off state
- //
- SecCoreData.DataSize = sizeof(EFI_SEC_PEI_HAND_OFF);
-
- SecCoreData.TemporaryRamSize = (UINTN) PcdGet32 (PcdOvmfSecPeiTempRamSize);
- SecCoreData.TemporaryRamBase = (VOID*)((UINT8 *)TopOfCurrentStack - SecCoreData.TemporaryRamSize);
-
- SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;
- SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize >> 1;
-
- SecCoreData.StackBase = (UINT8 *)SecCoreData.TemporaryRamBase + SecCoreData.PeiTemporaryRamSize;
- SecCoreData.StackSize = SecCoreData.TemporaryRamSize >> 1;
-
- SecCoreData.BootFirmwareVolumeBase = BootFv;
- SecCoreData.BootFirmwareVolumeSize = (UINTN) BootFv->FvLength;
-
- //
- // Make sure the 8259 is masked before initializing the Debug Agent and the debug timer is enabled
- //
- IoWrite8 (0x21, 0xff);
- IoWrite8 (0xA1, 0xff);
-
- //
- // Initialize Debug Agent to support source level debug in SEC/PEI phases before memory ready.
- //
- InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, &SecCoreData, SecStartupPhase2);
-}
-
-/**
- Caller provided function to be invoked at the end of InitializeDebugAgent().
-
- 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] Context The first input parameter of InitializeDebugAgent().
-
-**/
-VOID
-EFIAPI
-SecStartupPhase2(
- IN VOID *Context
- )
-{
- EFI_SEC_PEI_HAND_OFF *SecCoreData;
- EFI_FIRMWARE_VOLUME_HEADER *BootFv;
- EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint;
-
- SecCoreData = (EFI_SEC_PEI_HAND_OFF *) Context;
-
- //
- // Find PEI Core entry point. It will report SEC and Pei Core debug information if remote debug
- // is enabled.
- //
- BootFv = (EFI_FIRMWARE_VOLUME_HEADER *)SecCoreData->BootFirmwareVolumeBase;
- FindAndReportEntryPoints (&BootFv, &PeiCoreEntryPoint);
- SecCoreData->BootFirmwareVolumeBase = BootFv;
- SecCoreData->BootFirmwareVolumeSize = (UINTN) BootFv->FvLength;
-
- //
- // Transfer the control to the PEI core
- //
- (*PeiCoreEntryPoint) (SecCoreData, (EFI_PEI_PPI_DESCRIPTOR *)&mPrivateDispatchTable);
-
- //
- // If we get here then the PEI Core returned, which is not recoverable.
- //
- ASSERT (FALSE);
- CpuDeadLoop ();
-}
-
-EFI_STATUS
-EFIAPI
-TemporaryRamMigration (
- IN CONST EFI_PEI_SERVICES **PeiServices,
- IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,
- IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,
- IN UINTN CopySize
- )
-{
- IA32_DESCRIPTOR IdtDescriptor;
- VOID *OldHeap;
- VOID *NewHeap;
- VOID *OldStack;
- VOID *NewStack;
- DEBUG_AGENT_CONTEXT_POSTMEM_SEC DebugAgentContext;
- BOOLEAN OldStatus;
- BASE_LIBRARY_JUMP_BUFFER JumpBuffer;
-
- DEBUG ((EFI_D_INFO,
- "TemporaryRamMigration(0x%Lx, 0x%Lx, 0x%Lx)\n",
- TemporaryMemoryBase,
- PermanentMemoryBase,
- (UINT64)CopySize
- ));
-
- OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;
- NewHeap = (VOID*)((UINTN)PermanentMemoryBase + (CopySize >> 1));
-
- OldStack = (VOID*)((UINTN)TemporaryMemoryBase + (CopySize >> 1));
- NewStack = (VOID*)(UINTN)PermanentMemoryBase;
-
- DebugAgentContext.HeapMigrateOffset = (UINTN)NewHeap - (UINTN)OldHeap;
- DebugAgentContext.StackMigrateOffset = (UINTN)NewStack - (UINTN)OldStack;
-
- OldStatus = SaveAndSetDebugTimerInterrupt (FALSE);
- InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, (VOID *) &DebugAgentContext, NULL);
-
- //
- // Migrate Heap
- //
- CopyMem (NewHeap, OldHeap, CopySize >> 1);
-
- //
- // Migrate Stack
- //
- CopyMem (NewStack, OldStack, CopySize >> 1);
-
- //
- // Rebase IDT table in permanent memory
- //
- AsmReadIdtr (&IdtDescriptor);
- IdtDescriptor.Base = IdtDescriptor.Base - (UINTN)OldStack + (UINTN)NewStack;
-
- AsmWriteIdtr (&IdtDescriptor);
-
- //
- // Use SetJump()/LongJump() to switch to a new stack.
- //
- if (SetJump (&JumpBuffer) == 0) {
-#if defined (MDE_CPU_IA32)
- JumpBuffer.Esp = JumpBuffer.Esp + DebugAgentContext.StackMigrateOffset;
-#endif
-#if defined (MDE_CPU_X64)
- JumpBuffer.Rsp = JumpBuffer.Rsp + DebugAgentContext.StackMigrateOffset;
-#endif
- LongJump (&JumpBuffer, (UINTN)-1);
- }
-
- SaveAndSetDebugTimerInterrupt (OldStatus);
-
- return EFI_SUCCESS;
-}
-
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