/** @file
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Uefi.h>
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#include <PiSmm.h>
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#include <Library/TestPointCheckLib.h>
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#include <Library/TestPointLib.h>
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#include <Library/DebugLib.h>
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#include <Guid/MemoryAttributesTable.h>
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#define NEXT_MEMORY_DESCRIPTOR(MemoryDescriptor, Size) \
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((EFI_MEMORY_DESCRIPTOR *)((UINT8 *)(MemoryDescriptor) + (Size)))
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extern EFI_MEMORY_DESCRIPTOR *mUefiMemoryMap;
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extern UINTN mUefiMemoryMapSize;
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extern UINTN mUefiDescriptorSize;
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extern EFI_GCD_MEMORY_SPACE_DESCRIPTOR *mGcdMemoryMap;
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extern EFI_GCD_IO_SPACE_DESCRIPTOR *mGcdIoMap;
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extern UINTN mGcdMemoryMapNumberOfDescriptors;
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extern UINTN mGcdIoMapNumberOfDescriptors;
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EFI_STATUS
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TestPointCheckPageTable (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINTN Length,
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IN BOOLEAN IsCode,
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IN BOOLEAN IsOutsideSmram
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);
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BOOLEAN
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IsUefiPageNotPresent (
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IN EFI_MEMORY_DESCRIPTOR *MemoryMap
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)
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{
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switch (MemoryMap->Type) {
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case EfiLoaderCode:
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case EfiLoaderData:
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case EfiBootServicesCode:
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case EfiBootServicesData:
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case EfiConventionalMemory:
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case EfiUnusableMemory:
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case EfiACPIReclaimMemory:
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return TRUE;
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default:
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return FALSE;
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}
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}
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EFI_STATUS
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TestPointCheckSmmCommunicationBuffer (
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IN EFI_MEMORY_DESCRIPTOR *UefiMemoryMap,
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IN UINTN UefiMemoryMapSize,
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IN UINTN UefiDescriptorSize,
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IN EFI_MEMORY_ATTRIBUTES_TABLE *MemoryAttributesTable
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)
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{
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EFI_STATUS ReturnStatus;
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EFI_STATUS Status;
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EFI_MEMORY_DESCRIPTOR *MemoryMap;
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UINTN MemoryMapEntryCount;
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UINTN Index;
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EFI_MEMORY_DESCRIPTOR *Entry;
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DEBUG ((DEBUG_INFO, "==== TestPointCheckSmmCommunicationBuffer - Enter\n"));
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ReturnStatus = EFI_SUCCESS;
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MemoryMapEntryCount = UefiMemoryMapSize/UefiDescriptorSize;
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MemoryMap = UefiMemoryMap;
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for (Index = 0; Index < MemoryMapEntryCount; Index++) {
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if (IsUefiPageNotPresent(MemoryMap)) {
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DEBUG ((DEBUG_INFO, "UEFI MemoryMap Checking 0x%lx - 0x%x\n", MemoryMap->PhysicalStart, EFI_PAGES_TO_SIZE(MemoryMap->NumberOfPages)));
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Status = TestPointCheckPageTable (
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MemoryMap->PhysicalStart,
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EFI_PAGES_TO_SIZE((UINTN)MemoryMap->NumberOfPages),
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FALSE,
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TRUE
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);
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if (EFI_ERROR(Status)) {
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ReturnStatus = Status;
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}
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}
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MemoryMap = NEXT_MEMORY_DESCRIPTOR(MemoryMap, UefiDescriptorSize);
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}
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if (MemoryAttributesTable != NULL) {
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Entry = (EFI_MEMORY_DESCRIPTOR *)(MemoryAttributesTable + 1);
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for (Index = 0; Index < MemoryAttributesTable->NumberOfEntries; Index++) {
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if (Entry->Type == EfiRuntimeServicesCode || Entry->Type == EfiRuntimeServicesData) {
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if ((Entry->Attribute & EFI_MEMORY_RO) != 0) {
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DEBUG ((DEBUG_INFO, "UEFI MemoryAttributeTable Checking 0x%lx - 0x%x\n", Entry->PhysicalStart, EFI_PAGES_TO_SIZE(Entry->NumberOfPages)));
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Status = TestPointCheckPageTable (
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Entry->PhysicalStart,
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EFI_PAGES_TO_SIZE((UINTN)Entry->NumberOfPages),
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FALSE,
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TRUE
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);
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if (EFI_ERROR(Status)) {
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ReturnStatus = Status;
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}
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}
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}
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Entry = NEXT_MEMORY_DESCRIPTOR (Entry, MemoryAttributesTable->DescriptorSize);
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}
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}
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if (EFI_ERROR (ReturnStatus)) {
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TestPointLibAppendErrorString (
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PLATFORM_TEST_POINT_ROLE_PLATFORM_IBV,
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NULL,
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TEST_POINT_BYTE6_SMM_READY_TO_LOCK_SECURE_SMM_COMMUNICATION_BUFFER_ERROR_CODE \
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TEST_POINT_SMM_READY_TO_BOOT \
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TEST_POINT_BYTE6_SMM_READY_TO_LOCK_SECURE_SMM_COMMUNICATION_BUFFER_ERROR_STRING
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);
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}
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DEBUG ((DEBUG_INFO, "==== TestPointCheckSmmCommunicationBuffer - Exit\n"));
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return EFI_SUCCESS;
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}
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