mirror of https://github.com/acidanthera/audk.git
EdkCompatibilityPkg: Add AcpiVariableHobOnSmramReserveHobThunk
Signed-off-by: jljusten Reviewed-by: mdkinney Reviewed-by: geekboy15a git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11904 6f19259b-4bc3-4df7-8a09-765794883524
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jljusten
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/** @file
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This is the driver that produce AcpiVariable hob and slit SmramReserve hob
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for ECP platform.
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Copyright (c) 2010 - 2011, 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
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of the BSD License which accompanies this distribution. The
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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 <PiPei.h>
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#include <Guid/SmramMemoryReserve.h>
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#include <Guid/AcpiVariable.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/DebugLib.h>
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#include <Library/HobLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/BaseMemoryLib.h>
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/**
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Retrieves the data structure associated witht he GUIDed HOB of type gEfiSmmPeiSmramMemoryReserveGuid
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@retval NULL A HOB of type gEfiSmmPeiSmramMemoryReserveGuid could not be found.
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@retval !NULL A pointer to the GUID data from a HIB of type gEfiSmmPeiSmramMemoryReserveGuid
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**/
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EFI_SMRAM_HOB_DESCRIPTOR_BLOCK *
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GetSrmamHobData (
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VOID
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)
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{
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VOID *GuidHob;
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//
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// Search SmramMemoryReserve HOB that describes SMRAM region
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//
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GuidHob = GetFirstGuidHob (&gEfiSmmPeiSmramMemoryReserveGuid);
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if (GuidHob == NULL) {
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return NULL;
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}
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return (EFI_SMRAM_HOB_DESCRIPTOR_BLOCK *)GET_GUID_HOB_DATA (GuidHob);
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}
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/**
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This routine will split SmramReserve hob to reserve 1 page for SMRAM content in S3 phase
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for R9 SMM core.
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@retval EFI_SUCCESS The gEfiSmmPeiSmramMemoryReserveGuid is splited successfully.
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@retval EFI_NOT_FOUND The gEfiSmmPeiSmramMemoryReserveGuid is not found.
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**/
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EFI_STATUS
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EFIAPI
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SplitSmramReserveHob (
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VOID
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)
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{
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EFI_HOB_GUID_TYPE *GuidHob;
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EFI_PEI_HOB_POINTERS Hob;
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EFI_SMRAM_HOB_DESCRIPTOR_BLOCK *DescriptorBlock;
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EFI_SMRAM_HOB_DESCRIPTOR_BLOCK *NewDescriptorBlock;
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UINTN BufferSize;
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UINTN SmramRanges;
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UINTN Index;
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UINTN SubIndex;
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//
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// Retrieve the GUID HOB data that contains the set of SMRAM descriptyors
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//
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GuidHob = GetFirstGuidHob (&gEfiSmmPeiSmramMemoryReserveGuid);
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if (GuidHob == NULL) {
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return EFI_NOT_FOUND;
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}
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DescriptorBlock = (EFI_SMRAM_HOB_DESCRIPTOR_BLOCK *)GET_GUID_HOB_DATA (GuidHob);
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//
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// Allocate one extra EFI_SMRAM_DESCRIPTOR to describe a page of SMRAM memory that contains a pointer
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// to the SMM Services Table that is required on the S3 resume path
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//
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SmramRanges = DescriptorBlock->NumberOfSmmReservedRegions;
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BufferSize = sizeof (EFI_SMRAM_HOB_DESCRIPTOR_BLOCK) + (SmramRanges * sizeof (EFI_SMRAM_DESCRIPTOR));
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Hob.Raw = BuildGuidHob (
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&gEfiSmmPeiSmramMemoryReserveGuid,
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BufferSize
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);
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ASSERT (Hob.Raw);
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NewDescriptorBlock = (EFI_SMRAM_HOB_DESCRIPTOR_BLOCK *)Hob.Raw;
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//
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// Copy old EFI_SMRAM_HOB_DESCRIPTOR_BLOCK to new allocated region
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//
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CopyMem ((VOID *)Hob.Raw, DescriptorBlock, BufferSize - sizeof(EFI_SMRAM_DESCRIPTOR));
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//
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// Increase the number of SMRAM descriptors by 1 to make room for the ALLOCATED descriptor of size EFI_PAGE_SIZE
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//
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NewDescriptorBlock->NumberOfSmmReservedRegions = (UINT32)(SmramRanges + 1);
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ASSERT (SmramRanges >= 1);
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//
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// Copy last entry to the end - we assume TSEG is last entry, which is same assumption as R8 CPU/SMM driver
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//
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CopyMem (&NewDescriptorBlock->Descriptor[SmramRanges], &NewDescriptorBlock->Descriptor[SmramRanges - 1], sizeof(EFI_SMRAM_DESCRIPTOR));
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//
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// Update the last but 1 entry in the array with a size of EFI_PAGE_SIZE and put into the ALLOCATED state
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//
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NewDescriptorBlock->Descriptor[SmramRanges - 1].PhysicalSize = EFI_PAGE_SIZE;
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NewDescriptorBlock->Descriptor[SmramRanges - 1].RegionState |= EFI_ALLOCATED;
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//
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// Reduce the size of the last SMRAM descriptor by EFI_PAGE_SIZE
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//
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NewDescriptorBlock->Descriptor[SmramRanges].PhysicalStart += EFI_PAGE_SIZE;
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NewDescriptorBlock->Descriptor[SmramRanges].CpuStart += EFI_PAGE_SIZE;
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NewDescriptorBlock->Descriptor[SmramRanges].PhysicalSize -= EFI_PAGE_SIZE;
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//
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// Now, we have created SmramReserve Hob for SmmAccess drive. But the issue is that, R8 SmmAccess will assume there is 2 SmramReserve region only.
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// Reporting 3 SmramReserve region will cause buffer overflow. Moreover, we would like to filter AB-SEG or H-SEG to avoid SMM cache-poisoning issue.
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// So we uses scan SmmReserve Hob to remove AB-SEG or H-SEG.
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//
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for (Index = 0; Index <= SmramRanges; Index++) {
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if (NewDescriptorBlock->Descriptor[Index].PhysicalSize == 0) {
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//
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// Skip zero entry
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//
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continue;
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}
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if (NewDescriptorBlock->Descriptor[Index].PhysicalStart < BASE_1MB) {
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//
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// Find AB-SEG or H-SEG
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// remove this region
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//
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for (SubIndex = Index; SubIndex < NewDescriptorBlock->NumberOfSmmReservedRegions - 1; SubIndex++) {
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CopyMem (&NewDescriptorBlock->Descriptor[SubIndex], &NewDescriptorBlock->Descriptor[SubIndex + 1], sizeof (EFI_SMRAM_DESCRIPTOR));
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}
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//
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// Zero last one
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//
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ZeroMem (&NewDescriptorBlock->Descriptor[SubIndex], sizeof(EFI_SMRAM_DESCRIPTOR));
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//
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// Decrease Number
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//
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NewDescriptorBlock->NumberOfSmmReservedRegions --;
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//
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// Decrease Index to let it test mew entry
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//
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Index --;
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}
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}
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//
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// Last step, we can scrub old one
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//
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ZeroMem (&GuidHob->Name, sizeof(GuidHob->Name));
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return EFI_SUCCESS;
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}
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/**
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This routine will create AcpiVariable hob to point the reserved smram in S3 phase
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for R9 SMM core.
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@retval EFI_SUCCESS The gEfiAcpiVariableGuid is created successfully.
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@retval EFI_NOT_FOUND The gEfiSmmPeiSmramMemoryReserveGuid is not found.
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**/
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EFI_STATUS
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EFIAPI
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CreateAcpiVariableHob (
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VOID
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)
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{
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EFI_PEI_HOB_POINTERS Hob;
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EFI_SMRAM_HOB_DESCRIPTOR_BLOCK *DescriptorBlock;
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UINTN SmramRanges;
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//
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// Retrieve the GUID HOB data that contains the set of SMRAM descriptyors
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//
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DescriptorBlock = GetSrmamHobData ();
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if (DescriptorBlock == NULL) {
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return EFI_NOT_FOUND;
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}
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Hob.Raw = BuildGuidHob (
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&gEfiAcpiVariableGuid,
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sizeof (EFI_SMRAM_DESCRIPTOR)
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);
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ASSERT (Hob.Raw);
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//
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// It should be already patch, so just copy last but 1 region directly.
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//
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SmramRanges = DescriptorBlock->NumberOfSmmReservedRegions;
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ASSERT (SmramRanges >= 2);
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if (SmramRanges >= 2) {
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CopyMem ((VOID *)Hob.Raw, &DescriptorBlock->Descriptor[SmramRanges - 2], sizeof (EFI_SMRAM_DESCRIPTOR));
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}
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return EFI_SUCCESS;
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}
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/**
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Driver Entry for AcpiVariableHobOnSmramReservHob PEIM
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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_SUCCESS Success create gEfiAcpiVariableGuid and
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split gEfiSmmPeiSmramMemoryReserveGuid.
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@retval EFI_NOT_FOUND Can not get gEfiSmmPeiSmramMemoryReserveGuid hob
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**/
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EFI_STATUS
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EFIAPI
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AcpiVariableHobEntry (
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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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//
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// Split SmramReserve hob, which is required for R9 SMM Core for S3.
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//
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Status = SplitSmramReserveHob ();
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Create AcpiVariable hob, which is required for R9 SMM Core for S3.
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//
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Status = CreateAcpiVariableHob ();
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return Status;
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}
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@ -0,0 +1,52 @@
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## @file
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# Component description file for AcpiVariableHob on SmramReservedHob Thunk driver.
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#
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# Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions
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# of the BSD License which accompanies this distribution. The
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# full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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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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##
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = AcpiVariableHobOnSmramReserveHobThunk
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FILE_GUID = 49B7F3E1-6C08-4a5b-911C-E9E397ED4178
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MODULE_TYPE = PEIM
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VERSION_STRING = 1.0
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ENTRY_POINT = AcpiVariableHobEntry
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#
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# The following information is for reference only and not required by the build tools.
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#
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# VALID_ARCHITECTURES = IA32 X64
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#
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[Sources]
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AcpiVariableHobOnSmramReserveHobThunk.c
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[Packages]
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MdePkg/MdePkg.dec
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IntelFrameworkPkg/IntelFrameworkPkg.dec
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IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
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[LibraryClasses]
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PeimEntryPoint
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MemoryAllocationLib
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DebugLib
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HobLib
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PeiServicesLib
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BaseMemoryLib
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[Guids]
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gEfiSmmPeiSmramMemoryReserveGuid # ALWAYS_CONSUMED
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gEfiAcpiVariableGuid # ALWAYS_CONSUMED
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[Depex]
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gEfiPeiMemoryDiscoveredPpiGuid
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@ -74,6 +74,7 @@ define GCC_MACRO = -DEFI_SPECIFICATION_VERSION=0x00020000 -DPI_S
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[LibraryClasses.common.PEIM]
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MemoryAllocationLib|MdePkg/Library/PeiMemoryAllocationLib/PeiMemoryAllocationLib.inf
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HobLib|MdePkg/Library/PeiHobLib/PeiHobLib.inf
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[LibraryClasses.common.DXE_DRIVER,LibraryClasses.common.DXE_RUNTIME_DRIVER]
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MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf
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@ -279,6 +280,7 @@ define GCC_MACRO = -DEFI_SPECIFICATION_VERSION=0x00020000 -DPI_S
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EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/PeiServicesTablePointerLibMm7/PeiServicesTablePointerLibMm7.inf
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EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/DxePerformanceLib/DxePerformanceLib.inf # Use IA32/X64 specific AsmReadTsc ().
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EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/PeiPerformanceLib/PeiPerformanceLib.inf # Use IA32/X64 specific AsmReadTsc ().
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EdkCompatibilityPkg/Compatibility/AcpiVariableHobOnSmramReserveHobThunk/AcpiVariableHobOnSmramReserveHobThunk.inf
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EdkCompatibilityPkg/Compatibility/MpServicesOnFrameworkMpServicesThunk/MpServicesOnFrameworkMpServicesThunk.inf
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EdkCompatibilityPkg/Compatibility/SmmBaseOnSmmBase2Thunk/SmmBaseOnSmmBase2Thunk.inf
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EdkCompatibilityPkg/Compatibility/SmmBaseHelper/SmmBaseHelper.inf
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