d1d89e86ed
Add the check at DxeLoadCore() on MdeModulePkg\Core\DxeIplPeim\DxeLoad.c to skip install the "gEfiMemoryTypeInformationGuid" hob if it is already installed. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18018 6f19259b-4bc3-4df7-8a09-765794883524
763 lines
25 KiB
C
763 lines
25 KiB
C
/** @file
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Last PEIM.
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Responsibility of this module is to load the DXE Core from a Firmware Volume.
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Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "DxeIpl.h"
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//
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// Module Globals used in the DXE to PEI hand off
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// These must be module globals, so the stack can be switched
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//
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CONST EFI_DXE_IPL_PPI mDxeIplPpi = {
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DxeLoadCore
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};
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CONST EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI mCustomGuidedSectionExtractionPpi = {
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CustomGuidedSectionExtract
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};
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CONST EFI_PEI_DECOMPRESS_PPI mDecompressPpi = {
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Decompress
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};
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CONST EFI_PEI_PPI_DESCRIPTOR mPpiList[] = {
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{
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EFI_PEI_PPI_DESCRIPTOR_PPI,
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&gEfiDxeIplPpiGuid,
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(VOID *) &mDxeIplPpi
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},
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{
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(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEfiPeiDecompressPpiGuid,
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(VOID *) &mDecompressPpi
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}
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};
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CONST EFI_PEI_PPI_DESCRIPTOR gEndOfPeiSignalPpi = {
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(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEfiEndOfPeiSignalPpiGuid,
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NULL
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};
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/**
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Entry point of DXE IPL PEIM.
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This function installs DXE IPL PPI and Decompress PPI. It also reloads
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itself to memory on non-S3 resume boot path.
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@param FileHandle Handle of the file being invoked.
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@param PeiServices Describes the list of possible PEI Services.
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@retval EFI_SUCESS The entry point of DXE IPL PEIM executes successfully.
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@retval Others Some error occurs during the execution of this function.
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**/
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EFI_STATUS
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EFIAPI
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PeimInitializeDxeIpl (
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IN EFI_PEI_FILE_HANDLE FileHandle,
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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{
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EFI_STATUS Status;
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EFI_BOOT_MODE BootMode;
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EFI_GUID *ExtractHandlerGuidTable;
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UINTN ExtractHandlerNumber;
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EFI_PEI_PPI_DESCRIPTOR *GuidPpi;
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BootMode = GetBootModeHob ();
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if (BootMode != BOOT_ON_S3_RESUME) {
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Status = PeiServicesRegisterForShadow (FileHandle);
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if (Status == EFI_SUCCESS) {
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//
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// EFI_SUCESS means it is the first time to call register for shadow.
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//
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return Status;
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}
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//
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// Ensure that DXE IPL is shadowed to permanent memory.
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//
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ASSERT (Status == EFI_ALREADY_STARTED);
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}
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//
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// Get custom extract guided section method guid list
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//
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ExtractHandlerNumber = ExtractGuidedSectionGetGuidList (&ExtractHandlerGuidTable);
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//
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// Install custom extraction guid PPI
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//
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if (ExtractHandlerNumber > 0) {
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GuidPpi = (EFI_PEI_PPI_DESCRIPTOR *) AllocatePool (ExtractHandlerNumber * sizeof (EFI_PEI_PPI_DESCRIPTOR));
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ASSERT (GuidPpi != NULL);
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while (ExtractHandlerNumber-- > 0) {
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GuidPpi->Flags = EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST;
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GuidPpi->Ppi = (VOID *) &mCustomGuidedSectionExtractionPpi;
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GuidPpi->Guid = &ExtractHandlerGuidTable[ExtractHandlerNumber];
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Status = PeiServicesInstallPpi (GuidPpi++);
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ASSERT_EFI_ERROR(Status);
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}
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}
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//
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// Install DxeIpl and Decompress PPIs.
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//
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Status = PeiServicesInstallPpi (mPpiList);
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ASSERT_EFI_ERROR(Status);
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return Status;
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}
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/**
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Validate variable data for the MemoryTypeInformation.
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@param MemoryData Variable data.
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@param MemoryDataSize Variable data length.
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@return TRUE The variable data is valid.
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@return FALSE The variable data is invalid.
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**/
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BOOLEAN
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ValidateMemoryTypeInfoVariable (
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IN EFI_MEMORY_TYPE_INFORMATION *MemoryData,
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IN UINTN MemoryDataSize
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)
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{
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UINTN Count;
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UINTN Index;
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// Check the input parameter.
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if (MemoryData == NULL) {
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return FALSE;
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}
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// Get Count
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Count = MemoryDataSize / sizeof (*MemoryData);
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// Check Size
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if (Count * sizeof(*MemoryData) != MemoryDataSize) {
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return FALSE;
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}
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// Check last entry type filed.
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if (MemoryData[Count - 1].Type != EfiMaxMemoryType) {
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return FALSE;
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}
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// Check the type filed.
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for (Index = 0; Index < Count - 1; Index++) {
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if (MemoryData[Index].Type >= EfiMaxMemoryType) {
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return FALSE;
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}
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}
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return TRUE;
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}
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/**
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Main entry point to last PEIM.
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This function finds DXE Core in the firmware volume and transfer the control to
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DXE core.
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@param This Entry point for DXE IPL PPI.
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@param PeiServices General purpose services available to every PEIM.
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@param HobList Address to the Pei HOB list.
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@return EFI_SUCCESS DXE core was successfully loaded.
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@return EFI_OUT_OF_RESOURCES There are not enough resources to load DXE core.
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**/
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EFI_STATUS
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EFIAPI
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DxeLoadCore (
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IN CONST EFI_DXE_IPL_PPI *This,
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_HOB_POINTERS HobList
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)
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{
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EFI_STATUS Status;
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EFI_FV_FILE_INFO DxeCoreFileInfo;
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EFI_PHYSICAL_ADDRESS DxeCoreAddress;
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UINT64 DxeCoreSize;
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EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint;
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EFI_BOOT_MODE BootMode;
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EFI_PEI_FILE_HANDLE FileHandle;
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EFI_PEI_READ_ONLY_VARIABLE2_PPI *Variable;
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EFI_PEI_LOAD_FILE_PPI *LoadFile;
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UINTN Instance;
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UINT32 AuthenticationState;
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UINTN DataSize;
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EFI_PEI_S3_RESUME2_PPI *S3Resume;
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EFI_PEI_RECOVERY_MODULE_PPI *PeiRecovery;
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EFI_MEMORY_TYPE_INFORMATION MemoryData[EfiMaxMemoryType + 1];
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//
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// if in S3 Resume, restore configure
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//
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BootMode = GetBootModeHob ();
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if (BootMode == BOOT_ON_S3_RESUME) {
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Status = PeiServicesLocatePpi (
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&gEfiPeiS3Resume2PpiGuid,
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0,
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NULL,
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(VOID **) &S3Resume
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);
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if (EFI_ERROR (Status)) {
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//
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// Report Status code that S3Resume PPI can not be found
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//
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REPORT_STATUS_CODE (
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EFI_ERROR_CODE | EFI_ERROR_MAJOR,
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(EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_EC_S3_RESUME_PPI_NOT_FOUND)
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);
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}
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ASSERT_EFI_ERROR (Status);
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Status = S3Resume->S3RestoreConfig2 (S3Resume);
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ASSERT_EFI_ERROR (Status);
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} else if (BootMode == BOOT_IN_RECOVERY_MODE) {
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REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_PC_RECOVERY_BEGIN));
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Status = PeiServicesLocatePpi (
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&gEfiPeiRecoveryModulePpiGuid,
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0,
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NULL,
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(VOID **) &PeiRecovery
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_ERROR, "Locate Recovery PPI Failed.(Status = %r)\n", Status));
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//
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// Report Status code the failure of locating Recovery PPI
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//
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REPORT_STATUS_CODE (
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EFI_ERROR_CODE | EFI_ERROR_MAJOR,
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(EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_EC_RECOVERY_PPI_NOT_FOUND)
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);
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CpuDeadLoop ();
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}
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REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_PC_CAPSULE_LOAD));
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Status = PeiRecovery->LoadRecoveryCapsule (PeiServices, PeiRecovery);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_ERROR, "Load Recovery Capsule Failed.(Status = %r)\n", Status));
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//
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// Report Status code that recovery image can not be found
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//
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REPORT_STATUS_CODE (
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EFI_ERROR_CODE | EFI_ERROR_MAJOR,
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(EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_EC_NO_RECOVERY_CAPSULE)
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);
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CpuDeadLoop ();
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}
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REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_PC_CAPSULE_START));
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//
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// Now should have a HOB with the DXE core
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//
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}
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if (GetFirstGuidHob ((CONST EFI_GUID *)&gEfiMemoryTypeInformationGuid) == NULL) {
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//
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// Don't build GuidHob if GuidHob has been installed.
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//
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Status = PeiServicesLocatePpi (
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&gEfiPeiReadOnlyVariable2PpiGuid,
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0,
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NULL,
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(VOID **)&Variable
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);
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if (!EFI_ERROR (Status)) {
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DataSize = sizeof (MemoryData);
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Status = Variable->GetVariable (
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Variable,
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EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
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&gEfiMemoryTypeInformationGuid,
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NULL,
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&DataSize,
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&MemoryData
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);
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if (!EFI_ERROR (Status) && ValidateMemoryTypeInfoVariable(MemoryData, DataSize)) {
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//
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// Build the GUID'd HOB for DXE
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//
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BuildGuidDataHob (
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&gEfiMemoryTypeInformationGuid,
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MemoryData,
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DataSize
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);
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}
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}
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}
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//
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// Look in all the FVs present in PEI and find the DXE Core FileHandle
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//
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FileHandle = DxeIplFindDxeCore ();
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//
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// Load the DXE Core from a Firmware Volume.
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//
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Instance = 0;
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do {
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Status = PeiServicesLocatePpi (&gEfiPeiLoadFilePpiGuid, Instance++, NULL, (VOID **) &LoadFile);
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//
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// These must exist an instance of EFI_PEI_LOAD_FILE_PPI to support to load DxeCore file handle successfully.
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//
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ASSERT_EFI_ERROR (Status);
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Status = LoadFile->LoadFile (
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LoadFile,
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FileHandle,
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&DxeCoreAddress,
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&DxeCoreSize,
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&DxeCoreEntryPoint,
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&AuthenticationState
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);
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} while (EFI_ERROR (Status));
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//
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// Get the DxeCore File Info from the FileHandle for the DxeCore GUID file name.
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//
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Status = PeiServicesFfsGetFileInfo (FileHandle, &DxeCoreFileInfo);
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ASSERT_EFI_ERROR (Status);
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//
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// Add HOB for the DXE Core
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//
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BuildModuleHob (
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&DxeCoreFileInfo.FileName,
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DxeCoreAddress,
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ALIGN_VALUE (DxeCoreSize, EFI_PAGE_SIZE),
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DxeCoreEntryPoint
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);
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//
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// Report Status Code EFI_SW_PEI_PC_HANDOFF_TO_NEXT
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//
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REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_PEI_CORE | EFI_SW_PEI_CORE_PC_HANDOFF_TO_NEXT));
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DEBUG ((DEBUG_INFO | DEBUG_LOAD, "Loading DXE CORE at 0x%11p EntryPoint=0x%11p\n", (VOID *)(UINTN)DxeCoreAddress, FUNCTION_ENTRY_POINT (DxeCoreEntryPoint)));
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//
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// Transfer control to the DXE Core
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// The hand off state is simply a pointer to the HOB list
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//
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HandOffToDxeCore (DxeCoreEntryPoint, HobList);
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//
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// If we get here, then the DXE Core returned. This is an error
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// DxeCore should not return.
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//
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ASSERT (FALSE);
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CpuDeadLoop ();
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return EFI_OUT_OF_RESOURCES;
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}
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/**
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Searches DxeCore in all firmware Volumes and loads the first
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instance that contains DxeCore.
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@return FileHandle of DxeCore to load DxeCore.
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**/
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EFI_PEI_FILE_HANDLE
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DxeIplFindDxeCore (
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VOID
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)
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{
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EFI_STATUS Status;
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UINTN Instance;
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EFI_PEI_FV_HANDLE VolumeHandle;
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EFI_PEI_FILE_HANDLE FileHandle;
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Instance = 0;
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while (TRUE) {
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//
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// Traverse all firmware volume instances
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//
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Status = PeiServicesFfsFindNextVolume (Instance, &VolumeHandle);
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//
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// If some error occurs here, then we cannot find any firmware
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// volume that may contain DxeCore.
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//
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if (EFI_ERROR (Status)) {
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REPORT_STATUS_CODE (EFI_PROGRESS_CODE, (EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_CORE_EC_DXE_CORRUPT));
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}
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ASSERT_EFI_ERROR (Status);
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//
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// Find the DxeCore file type from the beginning in this firmware volume.
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//
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FileHandle = NULL;
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Status = PeiServicesFfsFindNextFile (EFI_FV_FILETYPE_DXE_CORE, VolumeHandle, &FileHandle);
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if (!EFI_ERROR (Status)) {
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//
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// Find DxeCore FileHandle in this volume, then we skip other firmware volume and
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// return the FileHandle.
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//
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return FileHandle;
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}
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//
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// We cannot find DxeCore in this firmware volume, then search the next volume.
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//
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Instance++;
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}
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}
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/**
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The ExtractSection() function processes the input section and
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returns a pointer to the section contents. If the section being
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extracted does not require processing (if the section
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GuidedSectionHeader.Attributes has the
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EFI_GUIDED_SECTION_PROCESSING_REQUIRED field cleared), then
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OutputBuffer is just updated to point to the start of the
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section's contents. Otherwise, *Buffer must be allocated
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from PEI permanent memory.
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@param This Indicates the
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EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI instance.
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Buffer containing the input GUIDed section to be
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processed. OutputBuffer OutputBuffer is
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allocated from PEI permanent memory and contains
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the new section stream.
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@param InputSection A pointer to the input buffer, which contains
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the input section to be processed.
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@param OutputBuffer A pointer to a caller-allocated buffer, whose
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size is specified by the contents of OutputSize.
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@param OutputSize A pointer to a caller-allocated
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UINTN in which the size of *OutputBuffer
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allocation is stored. If the function
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returns anything other than EFI_SUCCESS,
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the value of OutputSize is undefined.
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@param AuthenticationStatus A pointer to a caller-allocated
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UINT32 that indicates the
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authentication status of the
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output buffer. If the input
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section's GuidedSectionHeader.
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Attributes field has the
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EFI_GUIDED_SECTION_AUTH_STATUS_VALID
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bit as clear,
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AuthenticationStatus must return
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zero. These bits reflect the
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status of the extraction
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operation. If the function
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returns anything other than
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EFI_SUCCESS, the value of
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AuthenticationStatus is
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undefined.
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@retval EFI_SUCCESS The InputSection was
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successfully processed and the
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section contents were returned.
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@retval EFI_OUT_OF_RESOURCES The system has insufficient
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resources to process the request.
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@retval EFI_INVALID_PARAMETER The GUID in InputSection does
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not match this instance of the
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GUIDed Section Extraction PPI.
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**/
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EFI_STATUS
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EFIAPI
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CustomGuidedSectionExtract (
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IN CONST EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI *This,
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IN CONST VOID *InputSection,
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OUT VOID **OutputBuffer,
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OUT UINTN *OutputSize,
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OUT UINT32 *AuthenticationStatus
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)
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{
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EFI_STATUS Status;
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UINT8 *ScratchBuffer;
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UINT32 ScratchBufferSize;
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UINT32 OutputBufferSize;
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UINT16 SectionAttribute;
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//
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// Init local variable
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//
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ScratchBuffer = NULL;
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//
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// Call GetInfo to get the size and attribute of input guided section data.
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//
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Status = ExtractGuidedSectionGetInfo (
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InputSection,
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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 ((DEBUG_ERROR, "GetInfo from guided section Failed - %r\n", Status));
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return Status;
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}
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if (ScratchBufferSize != 0) {
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//
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// Allocate scratch buffer
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//
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ScratchBuffer = AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize));
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if (ScratchBuffer == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
}
|
|
|
|
if (((SectionAttribute & EFI_GUIDED_SECTION_PROCESSING_REQUIRED) != 0) && OutputBufferSize > 0) {
|
|
//
|
|
// Allocate output buffer
|
|
//
|
|
*OutputBuffer = AllocatePages (EFI_SIZE_TO_PAGES (OutputBufferSize) + 1);
|
|
if (*OutputBuffer == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
DEBUG ((DEBUG_INFO, "Customized Guided section Memory Size required is 0x%x and address is 0x%p\n", OutputBufferSize, *OutputBuffer));
|
|
//
|
|
// *OutputBuffer still is one section. Adjust *OutputBuffer offset,
|
|
// skip EFI section header to make section data at page alignment.
|
|
//
|
|
*OutputBuffer = (VOID *)((UINT8 *) *OutputBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER));
|
|
}
|
|
|
|
Status = ExtractGuidedSectionDecode (
|
|
InputSection,
|
|
OutputBuffer,
|
|
ScratchBuffer,
|
|
AuthenticationStatus
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
//
|
|
// Decode failed
|
|
//
|
|
DEBUG ((DEBUG_ERROR, "Extract guided section Failed - %r\n", Status));
|
|
return Status;
|
|
}
|
|
|
|
*OutputSize = (UINTN) OutputBufferSize;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
Decompresses a section to the output buffer.
|
|
|
|
This function looks up the compression type field in the input section and
|
|
applies the appropriate compression algorithm to compress the section to a
|
|
callee allocated buffer.
|
|
|
|
@param This Points to this instance of the
|
|
EFI_PEI_DECOMPRESS_PEI PPI.
|
|
@param CompressionSection Points to the compressed section.
|
|
@param OutputBuffer Holds the returned pointer to the decompressed
|
|
sections.
|
|
@param OutputSize Holds the returned size of the decompress
|
|
section streams.
|
|
|
|
@retval EFI_SUCCESS The section was decompressed successfully.
|
|
OutputBuffer contains the resulting data and
|
|
OutputSize contains the resulting size.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
Decompress (
|
|
IN CONST EFI_PEI_DECOMPRESS_PPI *This,
|
|
IN CONST EFI_COMPRESSION_SECTION *CompressionSection,
|
|
OUT VOID **OutputBuffer,
|
|
OUT UINTN *OutputSize
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINT8 *DstBuffer;
|
|
UINT8 *ScratchBuffer;
|
|
UINT32 DstBufferSize;
|
|
UINT32 ScratchBufferSize;
|
|
VOID *CompressionSource;
|
|
UINT32 CompressionSourceSize;
|
|
UINT32 UncompressedLength;
|
|
UINT8 CompressionType;
|
|
|
|
if (CompressionSection->CommonHeader.Type != EFI_SECTION_COMPRESSION) {
|
|
ASSERT (FALSE);
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (IS_SECTION2 (CompressionSection)) {
|
|
CompressionSource = (VOID *) ((UINT8 *) CompressionSection + sizeof (EFI_COMPRESSION_SECTION2));
|
|
CompressionSourceSize = (UINT32) (SECTION2_SIZE (CompressionSection) - sizeof (EFI_COMPRESSION_SECTION2));
|
|
UncompressedLength = ((EFI_COMPRESSION_SECTION2 *) CompressionSection)->UncompressedLength;
|
|
CompressionType = ((EFI_COMPRESSION_SECTION2 *) CompressionSection)->CompressionType;
|
|
} else {
|
|
CompressionSource = (VOID *) ((UINT8 *) CompressionSection + sizeof (EFI_COMPRESSION_SECTION));
|
|
CompressionSourceSize = (UINT32) (SECTION_SIZE (CompressionSection) - sizeof (EFI_COMPRESSION_SECTION));
|
|
UncompressedLength = CompressionSection->UncompressedLength;
|
|
CompressionType = CompressionSection->CompressionType;
|
|
}
|
|
|
|
//
|
|
// This is a compression set, expand it
|
|
//
|
|
switch (CompressionType) {
|
|
case EFI_STANDARD_COMPRESSION:
|
|
if (FeaturePcdGet(PcdDxeIplSupportUefiDecompress)) {
|
|
//
|
|
// Load EFI standard compression.
|
|
// For compressed data, decompress them to destination buffer.
|
|
//
|
|
Status = UefiDecompressGetInfo (
|
|
CompressionSource,
|
|
CompressionSourceSize,
|
|
&DstBufferSize,
|
|
&ScratchBufferSize
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
//
|
|
// GetInfo failed
|
|
//
|
|
DEBUG ((DEBUG_ERROR, "Decompress GetInfo Failed - %r\n", Status));
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
//
|
|
// Allocate scratch buffer
|
|
//
|
|
ScratchBuffer = AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize));
|
|
if (ScratchBuffer == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
//
|
|
// Allocate destination buffer, extra one page for adjustment
|
|
//
|
|
DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize) + 1);
|
|
if (DstBuffer == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
//
|
|
// DstBuffer still is one section. Adjust DstBuffer offset, skip EFI section header
|
|
// to make section data at page alignment.
|
|
//
|
|
DstBuffer = DstBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER);
|
|
//
|
|
// Call decompress function
|
|
//
|
|
Status = UefiDecompress (
|
|
CompressionSource,
|
|
DstBuffer,
|
|
ScratchBuffer
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
//
|
|
// Decompress failed
|
|
//
|
|
DEBUG ((DEBUG_ERROR, "Decompress Failed - %r\n", Status));
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
break;
|
|
} else {
|
|
//
|
|
// PcdDxeIplSupportUefiDecompress is FALSE
|
|
// Don't support UEFI decompression algorithm.
|
|
//
|
|
ASSERT (FALSE);
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
case EFI_NOT_COMPRESSED:
|
|
//
|
|
// Allocate destination buffer
|
|
//
|
|
DstBufferSize = UncompressedLength;
|
|
DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize) + 1);
|
|
if (DstBuffer == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
//
|
|
// Adjust DstBuffer offset, skip EFI section header
|
|
// to make section data at page alignment.
|
|
//
|
|
DstBuffer = DstBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER);
|
|
//
|
|
// stream is not actually compressed, just encapsulated. So just copy it.
|
|
//
|
|
CopyMem (DstBuffer, CompressionSource, DstBufferSize);
|
|
break;
|
|
|
|
default:
|
|
//
|
|
// Don't support other unknown compression type.
|
|
//
|
|
ASSERT (FALSE);
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
*OutputSize = DstBufferSize;
|
|
*OutputBuffer = DstBuffer;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
/**
|
|
Updates the Stack HOB passed to DXE phase.
|
|
|
|
This function traverses the whole HOB list and update the stack HOB to
|
|
reflect the real stack that is used by DXE core.
|
|
|
|
@param BaseAddress The lower address of stack used by DxeCore.
|
|
@param Length The length of stack used by DxeCore.
|
|
|
|
**/
|
|
VOID
|
|
UpdateStackHob (
|
|
IN EFI_PHYSICAL_ADDRESS BaseAddress,
|
|
IN UINT64 Length
|
|
)
|
|
{
|
|
EFI_PEI_HOB_POINTERS Hob;
|
|
|
|
Hob.Raw = GetHobList ();
|
|
while ((Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw)) != NULL) {
|
|
if (CompareGuid (&gEfiHobMemoryAllocStackGuid, &(Hob.MemoryAllocationStack->AllocDescriptor.Name))) {
|
|
//
|
|
// Build a new memory allocation HOB with old stack info with EfiBootServicesData type. Need to
|
|
// avoid this region be reclaimed by DXE core as the IDT built in SEC might be on stack, and some
|
|
// PEIMs may also keep key information on stack
|
|
//
|
|
BuildMemoryAllocationHob (
|
|
Hob.MemoryAllocationStack->AllocDescriptor.MemoryBaseAddress,
|
|
Hob.MemoryAllocationStack->AllocDescriptor.MemoryLength,
|
|
EfiBootServicesData
|
|
);
|
|
//
|
|
// Update the BSP Stack Hob to reflect the new stack info.
|
|
//
|
|
Hob.MemoryAllocationStack->AllocDescriptor.MemoryBaseAddress = BaseAddress;
|
|
Hob.MemoryAllocationStack->AllocDescriptor.MemoryLength = Length;
|
|
break;
|
|
}
|
|
Hob.Raw = GET_NEXT_HOB (Hob);
|
|
}
|
|
}
|