Clean up SEC implementation for Ovmf.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10770 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
@@ -14,16 +14,35 @@
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**/
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#include <PiPei.h>
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#include <Library/PeimEntryPoint.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/PeimEntryPoint.h>
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#include <Library/PeiServicesLib.h>
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#include <Ppi/TemporaryRamSupport.h>
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#include <Library/PcdLib.h>
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#include <Library/UefiCpuLib.h>
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#include <Library/DebugAgentLib.h>
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#include <Library/IoLib.h>
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#include <Library/PeCoffLib.h>
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#include <Library/PeCoffGetEntryPointLib.h>
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#include <Library/PeCoffExtraActionLib.h>
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#include <Library/ExtractGuidedSectionLib.h>
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#include "SecMain.h"
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#include <Ppi/TemporaryRamSupport.h>
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#define SEC_IDT_ENTRY_COUNT 34
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typedef struct _SEC_IDT_TABLE {
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EFI_PEI_SERVICES *PeiService;
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IA32_IDT_GATE_DESCRIPTOR IdtTable[SEC_IDT_ENTRY_COUNT];
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} SEC_IDT_TABLE;
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VOID
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EFIAPI
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SecStartupPhase2 (
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IN VOID *Context
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);
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EFI_STATUS
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EFIAPI
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@@ -34,29 +53,529 @@ TemporaryRamMigration (
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IN UINTN CopySize
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);
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STATIC TEMPORARY_RAM_SUPPORT_PPI mTempRamSupportPpi = {
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(TEMPORARY_RAM_MIGRATION) TemporaryRamMigration
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//
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//
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//
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TEMPORARY_RAM_SUPPORT_PPI mTemporaryRamSupportPpi = {
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TemporaryRamMigration
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};
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STATIC EFI_PEI_PPI_DESCRIPTOR mPrivateDispatchTable[] = {
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EFI_PEI_PPI_DESCRIPTOR mPrivateDispatchTable[] = {
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{
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(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEfiTemporaryRamSupportPpiGuid,
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&mTempRamSupportPpi
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&mTemporaryRamSupportPpi
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},
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};
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//
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// Template of an IDT entry pointing to 10:FFFFFFE4h.
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//
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IA32_IDT_GATE_DESCRIPTOR mIdtEntryTemplate = {
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{ // Bits
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0xffe4, // OffsetLow
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0x10, // Selector
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0x0, // Reserved_0
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IA32_IDT_GATE_TYPE_INTERRUPT_32, // GateType
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0xffff // OffsetHigh
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}
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};
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VOID
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InitializeIdtPtr (
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IN VOID* IdtPtr
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/**
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Locates the main boot firmware volume.
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@param[in,out] BootFv On input, the base of the BootFv
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On output, the decompressed main firmware volume
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@retval EFI_SUCCESS The main firmware volume was located and decompressed
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@retval EFI_NOT_FOUND The main firmware volume was not found
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**/
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EFI_STATUS
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FindMainFv (
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IN OUT EFI_FIRMWARE_VOLUME_HEADER **BootFv
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)
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{
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IA32_DESCRIPTOR IdtDescriptor;
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EFI_FIRMWARE_VOLUME_HEADER *Fv;
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UINTN Distance;
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BOOLEAN Found;
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IdtDescriptor.Base = (UINTN)IdtPtr;
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IdtDescriptor.Limit = (UINT16) 0;
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AsmWriteIdtr (&IdtDescriptor);
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ASSERT (((UINTN) *BootFv & EFI_PAGE_MASK) == 0);
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Found = FALSE;
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Fv = *BootFv;
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Distance = (UINTN) (*BootFv)->FvLength;
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do {
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Fv = (EFI_FIRMWARE_VOLUME_HEADER*) ((UINT8*) Fv - EFI_PAGE_SIZE);
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Distance += EFI_PAGE_SIZE;
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if (Distance > SIZE_32MB) {
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return EFI_NOT_FOUND;
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}
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if (Fv->Signature != EFI_FVH_SIGNATURE) {
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continue;
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}
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if ((UINTN) Fv->FvLength > Distance) {
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continue;
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}
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*BootFv = Fv;
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return EFI_SUCCESS;
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} while (TRUE);
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}
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/**
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Locates a section within a series of sections
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with the specified section type.
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@param[in] Sections The sections to search
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@param[in] SizeOfSections Total size of all sections
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@param[in] SectionType The section type to locate
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@param[out] FoundSection The FFS section if found
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@retval EFI_SUCCESS The file and section was found
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@retval EFI_NOT_FOUND The file and section was not found
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@retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted
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**/
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EFI_STATUS
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FindFfsSectionInSections (
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IN VOID *Sections,
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IN UINTN SizeOfSections,
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IN EFI_SECTION_TYPE SectionType,
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OUT EFI_COMMON_SECTION_HEADER **FoundSection
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)
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{
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EFI_PHYSICAL_ADDRESS CurrentAddress;
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UINT32 Size;
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EFI_PHYSICAL_ADDRESS EndOfSections;
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EFI_COMMON_SECTION_HEADER *Section;
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EFI_PHYSICAL_ADDRESS EndOfSection;
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//
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// Loop through the FFS file sections within the PEI Core FFS file
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//
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EndOfSection = (EFI_PHYSICAL_ADDRESS)(UINTN) Sections;
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EndOfSections = EndOfSection + SizeOfSections;
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for (;;) {
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if (EndOfSection == EndOfSections) {
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break;
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}
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CurrentAddress = (EndOfSection + 3) & ~(3ULL);
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if (CurrentAddress >= EndOfSections) {
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return EFI_VOLUME_CORRUPTED;
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}
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Section = (EFI_COMMON_SECTION_HEADER*)(UINTN) CurrentAddress;
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DEBUG ((EFI_D_INFO, "Section->Type: 0x%x\n", Section->Type));
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Size = SECTION_SIZE (Section);
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if (Size < sizeof (*Section)) {
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return EFI_VOLUME_CORRUPTED;
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}
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EndOfSection = CurrentAddress + Size;
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if (EndOfSection > EndOfSections) {
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return EFI_VOLUME_CORRUPTED;
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}
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//
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// Look for the requested section type
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//
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if (Section->Type == SectionType) {
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*FoundSection = Section;
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return EFI_SUCCESS;
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}
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DEBUG ((EFI_D_INFO, "Section->Type (0x%x) != SectionType (0x%x)\n", Section->Type, SectionType));
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}
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return EFI_NOT_FOUND;
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}
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/**
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Locates a FFS file with the specified file type and a section
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within that file with the specified section type.
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@param[in] Fv The firmware volume to search
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@param[in] FileType The file type to locate
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@param[in] SectionType The section type to locate
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@param[out] FoundSection The FFS section if found
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@retval EFI_SUCCESS The file and section was found
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@retval EFI_NOT_FOUND The file and section was not found
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@retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted
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**/
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EFI_STATUS
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EFIAPI
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FindFfsFileAndSection (
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IN EFI_FIRMWARE_VOLUME_HEADER *Fv,
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IN EFI_FV_FILETYPE FileType,
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IN EFI_SECTION_TYPE SectionType,
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OUT EFI_COMMON_SECTION_HEADER **FoundSection
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)
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{
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EFI_STATUS Status;
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EFI_PHYSICAL_ADDRESS CurrentAddress;
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EFI_PHYSICAL_ADDRESS EndOfFirmwareVolume;
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EFI_FFS_FILE_HEADER *File;
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UINT32 Size;
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EFI_PHYSICAL_ADDRESS EndOfFile;
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if (Fv->Signature != EFI_FVH_SIGNATURE) {
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DEBUG ((EFI_D_INFO, "FV at %p does not have FV header signature\n", Fv));
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return EFI_VOLUME_CORRUPTED;
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}
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CurrentAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) Fv;
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EndOfFirmwareVolume = CurrentAddress + Fv->FvLength;
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//
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// Loop through the FFS files in the Boot Firmware Volume
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//
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for (EndOfFile = CurrentAddress + Fv->HeaderLength; ; ) {
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CurrentAddress = (EndOfFile + 7) & ~(7ULL);
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if (CurrentAddress > EndOfFirmwareVolume) {
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return EFI_VOLUME_CORRUPTED;
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}
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File = (EFI_FFS_FILE_HEADER*)(UINTN) CurrentAddress;
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Size = *(UINT32*) File->Size & 0xffffff;
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if (Size < (sizeof (*File) + sizeof (EFI_COMMON_SECTION_HEADER))) {
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return EFI_VOLUME_CORRUPTED;
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}
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DEBUG ((EFI_D_INFO, "File->Type: 0x%x\n", File->Type));
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EndOfFile = CurrentAddress + Size;
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if (EndOfFile > EndOfFirmwareVolume) {
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return EFI_VOLUME_CORRUPTED;
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}
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//
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// Look for the request file type
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//
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if (File->Type != FileType) {
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DEBUG ((EFI_D_INFO, "File->Type (0x%x) != FileType (0x%x)\n", File->Type, FileType));
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continue;
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}
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Status = FindFfsSectionInSections (
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(VOID*) (File + 1),
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(UINTN) EndOfFile - (UINTN) (File + 1),
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SectionType,
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FoundSection
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);
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if (!EFI_ERROR (Status) || (Status == EFI_VOLUME_CORRUPTED)) {
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return Status;
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}
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}
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}
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/**
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Locates the compressed main firmware volume and decompresses it.
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@param[in,out] Fv On input, the firmware volume to search
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On output, the decompressed main FV
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@retval EFI_SUCCESS The file and section was found
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@retval EFI_NOT_FOUND The file and section was not found
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@retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted
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**/
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EFI_STATUS
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EFIAPI
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DecompressGuidedFv (
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IN OUT EFI_FIRMWARE_VOLUME_HEADER **Fv
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)
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{
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EFI_STATUS Status;
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EFI_GUID_DEFINED_SECTION *Section;
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UINT32 OutputBufferSize;
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UINT32 ScratchBufferSize;
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UINT16 SectionAttribute;
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UINT32 AuthenticationStatus;
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VOID *OutputBuffer;
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VOID *ScratchBuffer;
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EFI_FIRMWARE_VOLUME_IMAGE_SECTION *NewFvSection;
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EFI_FIRMWARE_VOLUME_HEADER *NewFv;
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NewFvSection = (EFI_FIRMWARE_VOLUME_IMAGE_SECTION*) NULL;
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Status = FindFfsFileAndSection (
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*Fv,
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EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE,
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EFI_SECTION_GUID_DEFINED,
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(EFI_COMMON_SECTION_HEADER**) &Section
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "Unable to find GUID defined section\n"));
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return Status;
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}
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Status = ExtractGuidedSectionGetInfo (
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Section,
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&OutputBufferSize,
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&ScratchBufferSize,
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&SectionAttribute
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "Unable to GetInfo for GUIDed section\n"));
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return Status;
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}
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//PcdGet32 (PcdOvmfMemFvBase), PcdGet32 (PcdOvmfMemFvSize)
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OutputBuffer = (VOID*) ((UINT8*)(UINTN) PcdGet32 (PcdOvmfMemFvBase) + SIZE_1MB);
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ScratchBuffer = ALIGN_POINTER ((UINT8*) OutputBuffer + OutputBufferSize, SIZE_1MB);
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Status = ExtractGuidedSectionDecode (
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Section,
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&OutputBuffer,
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ScratchBuffer,
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&AuthenticationStatus
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "Error during GUID section decode\n"));
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return Status;
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}
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Status = FindFfsSectionInSections (
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OutputBuffer,
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OutputBufferSize,
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EFI_SECTION_FIRMWARE_VOLUME_IMAGE,
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(EFI_COMMON_SECTION_HEADER**) &NewFvSection
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "Unable to find FV image in extracted data\n"));
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return Status;
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}
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NewFv = (EFI_FIRMWARE_VOLUME_HEADER*)(UINTN) PcdGet32 (PcdOvmfMemFvBase);
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CopyMem (NewFv, (VOID*) (NewFvSection + 1), PcdGet32 (PcdOvmfMemFvSize));
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if (NewFv->Signature != EFI_FVH_SIGNATURE) {
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DEBUG ((EFI_D_ERROR, "Extracted FV at %p does not have FV header signature\n", NewFv));
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CpuDeadLoop ();
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return EFI_VOLUME_CORRUPTED;
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}
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*Fv = NewFv;
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return EFI_SUCCESS;
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}
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/**
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Locates the PEI Core entry point address
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@param[in] Fv The firmware volume to search
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@param[out] PeiCoreEntryPoint The entry point of the PEI Core image
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@retval EFI_SUCCESS The file and section was found
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@retval EFI_NOT_FOUND The file and section was not found
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@retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted
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**/
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EFI_STATUS
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EFIAPI
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FindPeiCoreImageBaseInFv (
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IN EFI_FIRMWARE_VOLUME_HEADER *Fv,
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OUT EFI_PHYSICAL_ADDRESS *PeiCoreImageBase
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)
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{
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EFI_STATUS Status;
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EFI_COMMON_SECTION_HEADER *Section;
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Status = FindFfsFileAndSection (
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Fv,
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EFI_FV_FILETYPE_PEI_CORE,
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EFI_SECTION_PE32,
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&Section
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);
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if (EFI_ERROR (Status)) {
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Status = FindFfsFileAndSection (
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Fv,
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EFI_FV_FILETYPE_PEI_CORE,
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EFI_SECTION_TE,
|
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&Section
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "Unable to find PEI Core image\n"));
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return Status;
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}
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}
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|
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*PeiCoreImageBase = (EFI_PHYSICAL_ADDRESS)(UINTN)(Section + 1);
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return EFI_SUCCESS;
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}
|
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|
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/**
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Locates the PEI Core entry point address
|
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@param[in,out] Fv The firmware volume to search
|
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@param[out] PeiCoreEntryPoint The entry point of the PEI Core image
|
||||
|
||||
@retval EFI_SUCCESS The file and section was found
|
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@retval EFI_NOT_FOUND The file and section was not found
|
||||
@retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted
|
||||
|
||||
**/
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VOID
|
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EFIAPI
|
||||
FindPeiCoreImageBase (
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IN OUT EFI_FIRMWARE_VOLUME_HEADER **BootFv,
|
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OUT EFI_PHYSICAL_ADDRESS *PeiCoreImageBase
|
||||
)
|
||||
{
|
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*PeiCoreImageBase = 0;
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|
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FindMainFv (BootFv);
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|
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DecompressGuidedFv (BootFv);
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|
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FindPeiCoreImageBaseInFv (*BootFv, PeiCoreImageBase);
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}
|
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|
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/**
|
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Find core image base.
|
||||
|
||||
**/
|
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EFI_STATUS
|
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EFIAPI
|
||||
FindImageBase (
|
||||
IN EFI_FIRMWARE_VOLUME_HEADER *BootFirmwareVolumePtr,
|
||||
OUT EFI_PHYSICAL_ADDRESS *SecCoreImageBase
|
||||
)
|
||||
{
|
||||
EFI_PHYSICAL_ADDRESS CurrentAddress;
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EFI_PHYSICAL_ADDRESS EndOfFirmwareVolume;
|
||||
EFI_FFS_FILE_HEADER *File;
|
||||
UINT32 Size;
|
||||
EFI_PHYSICAL_ADDRESS EndOfFile;
|
||||
EFI_COMMON_SECTION_HEADER *Section;
|
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EFI_PHYSICAL_ADDRESS EndOfSection;
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|
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*SecCoreImageBase = 0;
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|
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CurrentAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) BootFirmwareVolumePtr;
|
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EndOfFirmwareVolume = CurrentAddress + BootFirmwareVolumePtr->FvLength;
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|
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//
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// Loop through the FFS files in the Boot Firmware Volume
|
||||
//
|
||||
for (EndOfFile = CurrentAddress + BootFirmwareVolumePtr->HeaderLength; ; ) {
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||||
|
||||
CurrentAddress = (EndOfFile + 7) & 0xfffffffffffffff8ULL;
|
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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
|
||||
EFIAPI
|
||||
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
|
||||
@@ -66,92 +585,113 @@ SecCoreStartupWithStack (
|
||||
IN VOID *TopOfCurrentStack
|
||||
)
|
||||
{
|
||||
EFI_SEC_PEI_HAND_OFF *SecCoreData;
|
||||
UINT8 *BottomOfTempRam;
|
||||
UINT8 *TopOfTempRam;
|
||||
UINTN SizeOfTempRam;
|
||||
VOID *IdtPtr;
|
||||
VOID *PeiCoreEntryPoint;
|
||||
EFI_SEC_PEI_HAND_OFF SecCoreData;
|
||||
SEC_IDT_TABLE IdtTableInStack;
|
||||
IA32_DESCRIPTOR IdtDescriptor;
|
||||
UINT32 Index;
|
||||
|
||||
DEBUG ((EFI_D_INFO,
|
||||
ProcessLibraryConstructorList (NULL, NULL);
|
||||
|
||||
DEBUG ((EFI_D_ERROR,
|
||||
"SecCoreStartupWithStack(0x%x, 0x%x)\n",
|
||||
(UINT32)(UINTN)BootFv,
|
||||
(UINT32)(UINTN)TopOfCurrentStack
|
||||
));
|
||||
|
||||
ProcessLibraryConstructorList (NULL, NULL);
|
||||
|
||||
//
|
||||
// Initialize floating point operating environment
|
||||
// to be compliant with UEFI spec.
|
||||
//
|
||||
InitializeFloatingPointUnits ();
|
||||
|
||||
BottomOfTempRam = (UINT8*)(UINTN) INITIAL_TOP_OF_STACK;
|
||||
SizeOfTempRam = (UINTN) SIZE_64KB;
|
||||
TopOfTempRam = BottomOfTempRam + SizeOfTempRam;
|
||||
//
|
||||
// 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);
|
||||
|
||||
//
|
||||
// |-------------|
|
||||
// | SecCoreData | 4k
|
||||
// |-------------|
|
||||
// | Heap | 28k
|
||||
// |-------------|
|
||||
// |-------------| <-- TopOfCurrentStack
|
||||
// | Stack | 32k
|
||||
// |-------------| <---- INITIAL_TOP_OF_STACK
|
||||
// |-------------|
|
||||
// | Heap | 32k
|
||||
// |-------------| <-- SecCoreData.TemporaryRamBase
|
||||
//
|
||||
|
||||
//
|
||||
// Bind this information into the SEC hand-off state
|
||||
// Initialize SEC hand-off state
|
||||
//
|
||||
SecCoreData = (EFI_SEC_PEI_HAND_OFF*)((UINTN) TopOfTempRam - SIZE_4KB);
|
||||
SecCoreData->DataSize = sizeof(EFI_SEC_PEI_HAND_OFF);
|
||||
SecCoreData.DataSize = sizeof(EFI_SEC_PEI_HAND_OFF);
|
||||
|
||||
SecCoreData->TemporaryRamBase = (VOID*) BottomOfTempRam;
|
||||
SecCoreData->TemporaryRamSize = SizeOfTempRam;
|
||||
SecCoreData.TemporaryRamSize = SIZE_64KB;
|
||||
SecCoreData.TemporaryRamBase = (VOID*)((UINT8 *)TopOfCurrentStack - SecCoreData.TemporaryRamSize);
|
||||
|
||||
SecCoreData->PeiTemporaryRamSize = 28 * SIZE_1KB;
|
||||
SecCoreData->PeiTemporaryRamBase = (VOID*)((UINTN)SecCoreData - SecCoreData->PeiTemporaryRamSize);
|
||||
SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;
|
||||
SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize >> 1;
|
||||
|
||||
SecCoreData->StackBase = SecCoreData->TemporaryRamBase;
|
||||
SecCoreData->StackSize = (UINTN)SecCoreData->PeiTemporaryRamBase - (UINTN)SecCoreData->TemporaryRamBase;
|
||||
SecCoreData.StackBase = (UINT8 *)SecCoreData.TemporaryRamBase + SecCoreData.PeiTemporaryRamSize;
|
||||
SecCoreData.StackSize = SecCoreData.TemporaryRamSize >> 1;
|
||||
|
||||
SecCoreData.BootFirmwareVolumeBase = BootFv;
|
||||
SecCoreData.BootFirmwareVolumeSize = (UINTN) BootFv->FvLength;
|
||||
|
||||
//
|
||||
// Initialize the IDT Pointer, since IA32 & X64 architectures
|
||||
// use it to store the PEI Services pointer.
|
||||
// Make sure the 8259 is masked before initializing the Debug Agent and the debug timer is enabled
|
||||
//
|
||||
IdtPtr = (VOID*)((UINT8*)SecCoreData + sizeof (*SecCoreData) + sizeof (UINTN));
|
||||
IdtPtr = ALIGN_POINTER(IdtPtr, 16);
|
||||
InitializeIdtPtr (IdtPtr);
|
||||
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().
|
||||
|
||||
FindPeiCoreEntryPoint (&BootFv, &PeiCoreEntryPoint);
|
||||
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;
|
||||
|
||||
if (PeiCoreEntryPoint != NULL) {
|
||||
DEBUG ((EFI_D_INFO,
|
||||
"Calling PEI Core entry point at 0x%x\n",
|
||||
PeiCoreEntryPoint
|
||||
));
|
||||
//
|
||||
// Transfer control to the PEI Core
|
||||
//
|
||||
PeiSwitchStacks (
|
||||
(SWITCH_STACK_ENTRY_POINT) (UINTN) PeiCoreEntryPoint,
|
||||
SecCoreData,
|
||||
(VOID *) (UINTN) ((EFI_PEI_PPI_DESCRIPTOR *) &mPrivateDispatchTable),
|
||||
NULL,
|
||||
TopOfCurrentStack,
|
||||
(VOID *)((UINTN)SecCoreData->StackBase + SecCoreData->StackSize)
|
||||
);
|
||||
}
|
||||
|
||||
//
|
||||
// If we get here, then either we couldn't locate the PEI Core, or
|
||||
// the PEI Core returned.
|
||||
// Transfer the control to the PEI core
|
||||
//
|
||||
// Both of these errors are unrecoverable.
|
||||
(*PeiCoreEntryPoint) (SecCoreData, (EFI_PEI_PPI_DESCRIPTOR *)&mPrivateDispatchTable);
|
||||
|
||||
//
|
||||
// If we get here then the PEI Core returned, which is not recoverable.
|
||||
//
|
||||
ASSERT (FALSE);
|
||||
CpuDeadLoop ();
|
||||
@@ -166,23 +706,61 @@ TemporaryRamMigration (
|
||||
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_ERROR, "TemporaryRamMigration(0x%x, 0x%x, 0x%x)\n", (UINTN)TemporaryMemoryBase, (UINTN)PermanentMemoryBase, 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 the whole temporary memory to permenent memory.
|
||||
//
|
||||
CopyMem((VOID*)(UINTN)PermanentMemoryBase, (VOID*)(UINTN)TemporaryMemoryBase, CopySize);
|
||||
// Migrate Heap
|
||||
//
|
||||
CopyMem (NewHeap, OldHeap, CopySize >> 1);
|
||||
|
||||
//
|
||||
// SecSwitchStack function must be invoked after the memory migration
|
||||
// immediatly, also we need fixup the stack change caused by new call into
|
||||
// permenent memory.
|
||||
// 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.
|
||||
//
|
||||
SecSwitchStack (
|
||||
(UINTN) TemporaryMemoryBase,
|
||||
(UINTN) PermanentMemoryBase,
|
||||
CopySize
|
||||
);
|
||||
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;
|
||||
}
|
||||
|
Reference in New Issue
Block a user