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/** @file
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <PiDxe.h>
#include <Library/TestPointCheckLib.h>
#include <Library/TestPointLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Protocol/SmmAccess2.h>
CHAR8 *mSmramStateName[] = {
"Open",
"Closed",
"Locked",
"Cacheable",
"Allocated",
"NeedTest",
"NeedEccInit",
};
VOID
DumpSmramDescriptor (
IN UINTN NumberOfSmmReservedRegions,
IN EFI_SMRAM_DESCRIPTOR *Descriptor
)
{
UINTN Index;
UINTN BitIndex;
for (Index = 0; Index < NumberOfSmmReservedRegions; Index++) {
DEBUG ((DEBUG_INFO,
" BA=%016lx (A=%016lx) L=%016lx State=%016lx",
Descriptor[Index].PhysicalStart,
Descriptor[Index].CpuStart,
Descriptor[Index].PhysicalSize,
Descriptor[Index].RegionState
));
DEBUG ((DEBUG_INFO, " ("));
for (BitIndex = 0; BitIndex < sizeof(mSmramStateName)/sizeof(mSmramStateName[0]); BitIndex++) {
if ((Descriptor[Index].RegionState & LShiftU64 (1, BitIndex)) != 0) {
DEBUG ((DEBUG_INFO, mSmramStateName[BitIndex]));
DEBUG ((DEBUG_INFO, ","));
}
}
DEBUG ((DEBUG_INFO, ")\n"));
}
}
EFI_STATUS
CheckSmramDescriptor (
IN UINTN NumberOfSmmReservedRegions,
IN EFI_SMRAM_DESCRIPTOR *Descriptor
)
{
UINTN Index;
UINT64 Base;
UINT64 Length;
Base = 0;
Length = 0;
for (Index = 0; Index < NumberOfSmmReservedRegions; Index++) {
if (Base == 0) {
Base = Descriptor[Index].PhysicalStart;
Length = Descriptor[Index].PhysicalSize;
} else {
if (Base + Length == Descriptor[Index].PhysicalStart) {
Length = Length + Descriptor[Index].PhysicalSize;
} else if (Descriptor[Index].PhysicalStart + Descriptor[Index].PhysicalSize == Base) {
Base = Descriptor[Index].PhysicalStart;
Length = Length + Descriptor[Index].PhysicalSize;
} else {
DEBUG ((DEBUG_ERROR, "Smram is not adjacent\n"));
TestPointLibAppendErrorString (
PLATFORM_TEST_POINT_ROLE_PLATFORM_IBV,
NULL,
TEST_POINT_BYTE2_DXE_SMM_READY_TO_LOCK_SMRAM_ALIGNED_ERROR_CODE \
TEST_POINT_DXE_SMM_READY_TO_LOCK
TEST_POINT_BYTE2_DXE_SMM_READY_TO_LOCK_SMRAM_ALIGNED_ERROR_STRING
);
return EFI_INVALID_PARAMETER;
}
}
}
if (Length != GetPowerOfTwo64 (Length)) {
DEBUG ((DEBUG_ERROR, "Smram is not aligned\n"));
TestPointLibAppendErrorString (
PLATFORM_TEST_POINT_ROLE_PLATFORM_IBV,
NULL,
TEST_POINT_BYTE2_DXE_SMM_READY_TO_LOCK_SMRAM_ALIGNED_ERROR_CODE \
TEST_POINT_DXE_SMM_READY_TO_LOCK
TEST_POINT_BYTE2_DXE_SMM_READY_TO_LOCK_SMRAM_ALIGNED_ERROR_STRING
);
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
EFI_STATUS
TestPointCheckSmmInfo (
VOID
)
{
EFI_STATUS Status;
EFI_SMM_ACCESS2_PROTOCOL *SmmAccess;
UINTN Size;
EFI_SMRAM_DESCRIPTOR *SmramRanges;
DEBUG ((DEBUG_INFO, "==== TestPointCheckSmmInfo - Enter\n"));
Status = gBS->LocateProtocol (&gEfiSmmAccess2ProtocolGuid, NULL, (VOID **)&SmmAccess);
if (EFI_ERROR (Status)) {
goto Done ;
}
Size = 0;
Status = SmmAccess->GetCapabilities (SmmAccess, &Size, NULL);
ASSERT (Status == EFI_BUFFER_TOO_SMALL);
SmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocateZeroPool (Size);
ASSERT (SmramRanges != NULL);
Status = SmmAccess->GetCapabilities (SmmAccess, &Size, SmramRanges);
ASSERT_EFI_ERROR (Status);
DEBUG ((DEBUG_INFO, "SMRAM Info\n"));
DumpSmramDescriptor (Size / sizeof (EFI_SMRAM_DESCRIPTOR), SmramRanges);
Status = CheckSmramDescriptor (Size / sizeof (EFI_SMRAM_DESCRIPTOR), SmramRanges);
FreePool (SmramRanges);
Done:
DEBUG ((DEBUG_INFO, "==== TestPointCheckSmmInfo - Exit\n"));
return Status;
}
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