Hi,
I want to readout the SMRAM of an existing UEFI-Bios.
Therefore I wrote a UEFI application inherited by the EDK2 sample
MemoryProfileInfo:
EFI_STATUS GetSmramProfileData(VOID)
{
EFI_STATUS Status;
UINTN CommSize;
UINT8* pCommBuffer;
EFI_SMM_COMMUNICATE_HEADER* pCommHeader;
SMRAM_PROFILE_PARAMETER_GET_PROFILE_INFO* pCommGetProfileInfo;
SMRAM_PROFILE_PARAMETER_GET_PROFILE_DATA* pCommGetProfileData;
EFI_SMM_COMMUNICATION_PROTOCOL* pSmmCommunicationProt;
UINT64 ProfileSize;
PHYSICAL_ADDRESS ProfileBuffer;
//Get SMM communication protocol
Status = gBS->LocateProtocol(
&gEfiSmmCommunicationProtocolGuid,
NULL,
(VOID**)&pSmmCommunicationProt);
Print(L"LocateProtocol Status: %lx\n", Status);
if (EFI_SUCCESS == Status)
{
//Get buffer
CommSize = sizeof (EFI_GUID) + sizeof (UINTN) +
sizeof (SMRAM_PROFILE_PARAMETER_GET_PROFILE_DATA);
pCommBuffer = AllocateZeroPool(500);
if (pCommBuffer)
{
Print(L"AllocateZeroPool CommSize: %lx\n", CommSize);
// Get Size
pCommHeader = (EFI_SMM_COMMUNICATE_HEADER*)&pCommBuffer[0];
CopyMem (&pCommHeader->HeaderGuid, &gEdkiiMemoryProfileGuid,
sizeof (gEdkiiMemoryProfileGuid));
pCommHeader->MessageLength =
sizeof(SMRAM_PROFILE_PARAMETER_GET_PROFILE_INFO);
pCommGetProfileInfo = (SMRAM_PROFILE_PARAMETER_GET_PROFILE_INFO
*) &pCommBuffer[OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)];
pCommGetProfileInfo->Header.Command =
SMRAM_PROFILE_COMMAND_GET_PROFILE_INFO;
pCommGetProfileInfo->Header.DataLength = sizeof
(*pCommGetProfileInfo);
pCommGetProfileInfo->Header.ReturnStatus = (UINT64)-1;
pCommGetProfileInfo->ProfileSize = 0;
CommSize = sizeof (EFI_GUID) + sizeof (UINTN) +
pCommHeader->MessageLength;
Status = pSmmCommunicationProt->Communicate(
pSmmCommunicationProt,
pCommBuffer, &CommSize);
Print(L"pSmmCommunicationProt->Communicate Status:%lx\n", Status);
When I call pSmmCommunicationProt->communicate, I get the error 0x000000e,
which I suppose is due to the fact, that I use gEdkiiMemoryProfileGuid,
which isn't existent in the current UEFI Bios (2.40).
Now what should I do instead ?
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