diff options
Diffstat (limited to 'OvmfPkg/Library/PlatformInitLib/IntelTdx.c')
| -rw-r--r-- | OvmfPkg/Library/PlatformInitLib/IntelTdx.c | 768 |
1 files changed, 0 insertions, 768 deletions
diff --git a/OvmfPkg/Library/PlatformInitLib/IntelTdx.c b/OvmfPkg/Library/PlatformInitLib/IntelTdx.c index 6cb63139cb..ada8592ddd 100644 --- a/OvmfPkg/Library/PlatformInitLib/IntelTdx.c +++ b/OvmfPkg/Library/PlatformInitLib/IntelTdx.c @@ -16,779 +16,11 @@ #include <Library/MemoryAllocationLib.h>
#include <IndustryStandard/Tdx.h>
#include <IndustryStandard/IntelTdx.h>
-#include <IndustryStandard/QemuFwCfg.h>
-#include <Library/QemuFwCfgLib.h>
#include <Library/PeiServicesLib.h>
-#include <Library/TdxLib.h>
-#include <Library/TdxMailboxLib.h>
-#include <Library/SynchronizationLib.h>
#include <Pi/PrePiHob.h>
#include <WorkArea.h>
#include <ConfidentialComputingGuestAttr.h>
-#define ALIGNED_2MB_MASK 0x1fffff
-#define MEGABYTE_SHIFT 20
-
-#define ACCEPT_CHUNK_SIZE SIZE_32MB
-#define AP_STACK_SIZE SIZE_16KB
-#define APS_STACK_SIZE(CpusNum) (ALIGN_VALUE(CpusNum*AP_STACK_SIZE, SIZE_2MB))
-
-/**
- This function will be called to accept pages. Only BSP accepts pages.
-
- TDCALL(ACCEPT_PAGE) supports the accept page size of 4k and 2M. To
- simplify the implementation, the Memory to be accpeted is splitted
- into 3 parts:
- ----------------- <-- StartAddress1 (not 2M aligned)
- | part 1 | Length1 < 2M
- |---------------| <-- StartAddress2 (2M aligned)
- | | Length2 = Integer multiples of 2M
- | part 2 |
- | |
- |---------------| <-- StartAddress3
- | part 3 | Length3 < 2M
- |---------------|
-
- @param[in] PhysicalAddress Start physical adress
- @param[in] PhysicalEnd End physical address
-
- @retval EFI_SUCCESS Accept memory successfully
- @retval Others Other errors as indicated
-**/
-EFI_STATUS
-EFIAPI
-BspAcceptMemoryResourceRange (
- IN EFI_PHYSICAL_ADDRESS PhysicalAddress,
- IN EFI_PHYSICAL_ADDRESS PhysicalEnd
- )
-{
- EFI_STATUS Status;
- UINT32 AcceptPageSize;
- UINT64 StartAddress1;
- UINT64 StartAddress2;
- UINT64 StartAddress3;
- UINT64 TotalLength;
- UINT64 Length1;
- UINT64 Length2;
- UINT64 Length3;
- UINT64 Pages;
-
- AcceptPageSize = FixedPcdGet32 (PcdTdxAcceptPageSize);
- TotalLength = PhysicalEnd - PhysicalAddress;
- StartAddress1 = 0;
- StartAddress2 = 0;
- StartAddress3 = 0;
- Length1 = 0;
- Length2 = 0;
- Length3 = 0;
-
- if (TotalLength == 0) {
- return EFI_SUCCESS;
- }
-
- if (ALIGN_VALUE (PhysicalAddress, SIZE_2MB) != PhysicalAddress) {
- StartAddress1 = PhysicalAddress;
- Length1 = ALIGN_VALUE (PhysicalAddress, SIZE_2MB) - PhysicalAddress;
- if (Length1 >= TotalLength) {
- Length1 = TotalLength;
- }
-
- PhysicalAddress += Length1;
- TotalLength -= Length1;
- }
-
- if (TotalLength > SIZE_2MB) {
- StartAddress2 = PhysicalAddress;
- Length2 = TotalLength & ~(UINT64)ALIGNED_2MB_MASK;
- PhysicalAddress += Length2;
- TotalLength -= Length2;
- }
-
- if (TotalLength) {
- StartAddress3 = PhysicalAddress;
- Length3 = TotalLength;
- }
-
- Status = EFI_SUCCESS;
- if (Length1 > 0) {
- Pages = Length1 / SIZE_4KB;
- Status = TdAcceptPages (StartAddress1, Pages, SIZE_4KB);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- if (Length2 > 0) {
- Pages = Length2 / AcceptPageSize;
- Status = TdAcceptPages (StartAddress2, Pages, AcceptPageSize);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- if (Length3 > 0) {
- Pages = Length3 / SIZE_4KB;
- Status = TdAcceptPages (StartAddress3, Pages, SIZE_4KB);
- ASSERT (!EFI_ERROR (Status));
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- return Status;
-}
-
-/**
- * This function is called by BSP and APs to accept memory.
- * Note:
- * The input PhysicalStart/PhysicalEnd indicates the whole memory region
- * to be accepted. BSP or AP only accepts one piece in the whole memory region.
- *
- * @param CpuIndex vCPU index
- * @param CpusNum Total vCPU number of a Tdx guest
- * @param PhysicalStart Start address of a memory region which is to be accepted
- * @param PhysicalEnd End address of a memory region which is to be accepted
- *
- * @retval EFI_SUCCESS Successfully accept the memory
- * @retval Other Other errors as indicated
- */
-STATIC
-EFI_STATUS
-EFIAPI
-BspApAcceptMemoryResourceRange (
- UINT32 CpuIndex,
- UINT32 CpusNum,
- EFI_PHYSICAL_ADDRESS PhysicalStart,
- EFI_PHYSICAL_ADDRESS PhysicalEnd
- )
-{
- UINT64 Status;
- UINT64 Pages;
- UINT64 Stride;
- UINT64 AcceptPageSize;
- EFI_PHYSICAL_ADDRESS PhysicalAddress;
-
- AcceptPageSize = (UINT64)(UINTN)FixedPcdGet32 (PcdTdxAcceptPageSize);
-
- Status = EFI_SUCCESS;
- Stride = (UINTN)CpusNum * ACCEPT_CHUNK_SIZE;
- PhysicalAddress = PhysicalStart + ACCEPT_CHUNK_SIZE * (UINTN)CpuIndex;
-
- while (!EFI_ERROR (Status) && PhysicalAddress < PhysicalEnd) {
- Pages = MIN (ACCEPT_CHUNK_SIZE, PhysicalEnd - PhysicalAddress) / AcceptPageSize;
- Status = TdAcceptPages (PhysicalAddress, Pages, (UINT32)(UINTN)AcceptPageSize);
- ASSERT (!EFI_ERROR (Status));
- PhysicalAddress += Stride;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- * This function is called by APs to accept memory.
- *
- * @param CpuIndex vCPU index of an AP
- * @param PhysicalStart Start address of a memory region which is to be accepted
- * @param PhysicalEnd End address of a memory region which is to be accepted
- *
- * @retval EFI_SUCCESS Successfully accept the memory
- * @retval Others Other errors as indicated
- */
-STATIC
-EFI_STATUS
-EFIAPI
-ApAcceptMemoryResourceRange (
- UINT32 CpuIndex,
- EFI_PHYSICAL_ADDRESS PhysicalStart,
- EFI_PHYSICAL_ADDRESS PhysicalEnd
- )
-{
- UINT64 Status;
- TD_RETURN_DATA TdReturnData;
-
- Status = TdCall (TDCALL_TDINFO, 0, 0, 0, &TdReturnData);
- if (Status != TDX_EXIT_REASON_SUCCESS) {
- ASSERT (FALSE);
- return EFI_ABORTED;
- }
-
- if ((CpuIndex == 0) || (CpuIndex >= TdReturnData.TdInfo.NumVcpus)) {
- ASSERT (FALSE);
- return EFI_ABORTED;
- }
-
- return BspApAcceptMemoryResourceRange (CpuIndex, TdReturnData.TdInfo.NumVcpus, PhysicalStart, PhysicalEnd);
-}
-
-/**
- * This function is called by BSP. It coordinates BSP/APs to accept memory together.
- *
- * @param PhysicalStart Start address of a memory region which is to be accepted
- * @param PhysicalEnd End address of a memory region which is to be accepted
- * @param APsStackAddress APs stack address
- * @param CpusNum Total vCPU number of the Tdx guest
- *
- * @retval EFI_SUCCESS Successfully accept the memory
- * @retval Others Other errors as indicated
- */
-EFI_STATUS
-EFIAPI
-MpAcceptMemoryResourceRange (
- IN EFI_PHYSICAL_ADDRESS PhysicalStart,
- IN EFI_PHYSICAL_ADDRESS PhysicalEnd,
- IN OUT EFI_PHYSICAL_ADDRESS APsStackAddress,
- IN UINT32 CpusNum
- )
-{
- UINT64 Length;
- EFI_STATUS Status;
-
- Length = PhysicalEnd - PhysicalStart;
-
- DEBUG ((DEBUG_INFO, "MpAccept : 0x%llx - 0x%llx (0x%llx)\n", PhysicalStart, PhysicalEnd, Length));
-
- if (Length == 0) {
- return EFI_SUCCESS;
- }
-
- //
- // The start address is not 2M aligned. BSP first accept the part which is not 2M aligned.
- //
- if (ALIGN_VALUE (PhysicalStart, SIZE_2MB) != PhysicalStart) {
- Length = MIN (ALIGN_VALUE (PhysicalStart, SIZE_2MB) - PhysicalStart, Length);
- Status = BspAcceptMemoryResourceRange (PhysicalStart, PhysicalStart + Length);
- ASSERT (Status == EFI_SUCCESS);
-
- PhysicalStart += Length;
- Length = PhysicalEnd - PhysicalStart;
- }
-
- if (Length == 0) {
- return EFI_SUCCESS;
- }
-
- //
- // BSP will accept the memory by itself if the memory is not big enough compared with a chunk.
- //
- if (Length <= ACCEPT_CHUNK_SIZE) {
- return BspAcceptMemoryResourceRange (PhysicalStart, PhysicalEnd);
- }
-
- //
- // Now APs are asked to accept the memory together.
- //
- MpSerializeStart ();
-
- MpSendWakeupCommand (
- MpProtectedModeWakeupCommandAcceptPages,
- (UINT64)(UINTN)ApAcceptMemoryResourceRange,
- PhysicalStart,
- PhysicalEnd,
- APsStackAddress,
- AP_STACK_SIZE
- );
-
- //
- // Now BSP does its job.
- //
- BspApAcceptMemoryResourceRange (0, CpusNum, PhysicalStart, PhysicalEnd);
-
- MpSerializeEnd ();
-
- return EFI_SUCCESS;
-}
-
-/**
- BSP accept a small piece of memory which will be used as APs stack.
-
- @param[in] VmmHobList The Hoblist pass the firmware
- @param[in] APsStackSize APs stack size
- @param[out] PhysicalAddressEnd The physical end address of accepted memory in phase-1
-
- @retval EFI_SUCCESS Process the HobList successfully
- @retval Others Other errors as indicated
-**/
-EFI_STATUS
-EFIAPI
-AcceptMemoryForAPsStack (
- IN CONST VOID *VmmHobList,
- IN UINT32 APsStackSize,
- OUT EFI_PHYSICAL_ADDRESS *PhysicalAddressEnd
- )
-{
- EFI_STATUS Status;
- EFI_PEI_HOB_POINTERS Hob;
- EFI_PHYSICAL_ADDRESS PhysicalEnd;
- EFI_PHYSICAL_ADDRESS PhysicalStart;
- UINT64 ResourceLength;
- BOOLEAN MemoryRegionFound;
-
- ASSERT (VmmHobList != NULL);
-
- Status = EFI_SUCCESS;
- Hob.Raw = (UINT8 *)VmmHobList;
- MemoryRegionFound = FALSE;
-
- DEBUG ((DEBUG_INFO, "AcceptMemoryForAPsStack with APsStackSize=0x%x\n", APsStackSize));
-
- //
- // Parse the HOB list until end of list or matching type is found.
- //
- while (!END_OF_HOB_LIST (Hob) && !MemoryRegionFound) {
- if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
- DEBUG ((DEBUG_INFO, "\nResourceType: 0x%x\n", Hob.ResourceDescriptor->ResourceType));
-
- if (Hob.ResourceDescriptor->ResourceType == BZ3937_EFI_RESOURCE_MEMORY_UNACCEPTED) {
- ResourceLength = Hob.ResourceDescriptor->ResourceLength;
- PhysicalStart = Hob.ResourceDescriptor->PhysicalStart;
- PhysicalEnd = PhysicalStart + ResourceLength;
-
- DEBUG ((DEBUG_INFO, "ResourceAttribute: 0x%x\n", Hob.ResourceDescriptor->ResourceAttribute));
- DEBUG ((DEBUG_INFO, "PhysicalStart: 0x%llx\n", PhysicalStart));
- DEBUG ((DEBUG_INFO, "ResourceLength: 0x%llx\n", ResourceLength));
- DEBUG ((DEBUG_INFO, "Owner: %g\n\n", &Hob.ResourceDescriptor->Owner));
-
- if (ResourceLength >= APsStackSize) {
- MemoryRegionFound = TRUE;
- if (ResourceLength > ACCEPT_CHUNK_SIZE) {
- PhysicalEnd = Hob.ResourceDescriptor->PhysicalStart + APsStackSize;
- }
- }
-
- Status = BspAcceptMemoryResourceRange (
- Hob.ResourceDescriptor->PhysicalStart,
- PhysicalEnd
- );
- if (EFI_ERROR (Status)) {
- break;
- }
- }
- }
-
- Hob.Raw = GET_NEXT_HOB (Hob);
- }
-
- ASSERT (MemoryRegionFound);
- *PhysicalAddressEnd = PhysicalEnd;
-
- return Status;
-}
-
-/**
- BSP and APs work togeter to accept memory which is under the address of 4G.
-
- @param[in] VmmHobList The Hoblist pass the firmware
- @param[in] CpusNum Number of vCPUs
- @param[in] APsStackStartAddres Start address of APs stack
- @param[in] PhysicalAddressStart Start physical address which to be accepted
-
- @retval EFI_SUCCESS Process the HobList successfully
- @retval Others Other errors as indicated
-**/
-EFI_STATUS
-EFIAPI
-AcceptMemory (
- IN CONST VOID *VmmHobList,
- IN UINT32 CpusNum,
- IN EFI_PHYSICAL_ADDRESS APsStackStartAddress,
- IN EFI_PHYSICAL_ADDRESS PhysicalAddressStart
- )
-{
- EFI_STATUS Status;
- EFI_PEI_HOB_POINTERS Hob;
- EFI_PHYSICAL_ADDRESS PhysicalStart;
- EFI_PHYSICAL_ADDRESS PhysicalEnd;
- EFI_PHYSICAL_ADDRESS AcceptMemoryEndAddress;
-
- Status = EFI_SUCCESS;
- AcceptMemoryEndAddress = BASE_4GB;
-
- ASSERT (VmmHobList != NULL);
- Hob.Raw = (UINT8 *)VmmHobList;
-
- DEBUG ((DEBUG_INFO, "AcceptMemory under address of 4G\n"));
-
- //
- // Parse the HOB list until end of list or matching type is found.
- //
- while (!END_OF_HOB_LIST (Hob)) {
- if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
- if (Hob.ResourceDescriptor->ResourceType == BZ3937_EFI_RESOURCE_MEMORY_UNACCEPTED) {
- PhysicalStart = Hob.ResourceDescriptor->PhysicalStart;
- PhysicalEnd = PhysicalStart + Hob.ResourceDescriptor->ResourceLength;
-
- if (PhysicalEnd <= PhysicalAddressStart) {
- // this memory region has been accepted. Skipped it.
- Hob.Raw = GET_NEXT_HOB (Hob);
- continue;
- }
-
- if (PhysicalStart >= AcceptMemoryEndAddress) {
- // this memory region is not to be accepted. And we're done.
- break;
- }
-
- if (PhysicalStart >= PhysicalAddressStart) {
- // this memory region has not been acceted.
- } else if ((PhysicalStart < PhysicalAddressStart) && (PhysicalEnd > PhysicalAddressStart)) {
- // part of the memory region has been accepted.
- PhysicalStart = PhysicalAddressStart;
- }
-
- // then compare the PhysicalEnd with AcceptMemoryEndAddress
- if (PhysicalEnd >= AcceptMemoryEndAddress) {
- PhysicalEnd = AcceptMemoryEndAddress;
- }
-
- DEBUG ((DEBUG_INFO, "ResourceAttribute: 0x%x\n", Hob.ResourceDescriptor->ResourceAttribute));
- DEBUG ((DEBUG_INFO, "PhysicalStart: 0x%llx\n", Hob.ResourceDescriptor->PhysicalStart));
- DEBUG ((DEBUG_INFO, "ResourceLength: 0x%llx\n", Hob.ResourceDescriptor->ResourceLength));
- DEBUG ((DEBUG_INFO, "Owner: %g\n\n", &Hob.ResourceDescriptor->Owner));
-
- // Now we're ready to accept memory [PhysicalStart, PhysicalEnd)
- if (CpusNum == 1) {
- Status = BspAcceptMemoryResourceRange (PhysicalStart, PhysicalEnd);
- } else {
- Status = MpAcceptMemoryResourceRange (
- PhysicalStart,
- PhysicalEnd,
- APsStackStartAddress,
- CpusNum
- );
- }
-
- if (EFI_ERROR (Status)) {
- ASSERT (FALSE);
- break;
- }
-
- if (PhysicalEnd == AcceptMemoryEndAddress) {
- break;
- }
- }
- }
-
- Hob.Raw = GET_NEXT_HOB (Hob);
- }
-
- return Status;
-}
-
-/**
- Check the value whether in the valid list.
-
- @param[in] Value A value
- @param[in] ValidList A pointer to valid list
- @param[in] ValidListLength Length of valid list
-
- @retval TRUE The value is in valid list.
- @retval FALSE The value is not in valid list.
-
-**/
-BOOLEAN
-EFIAPI
-IsInValidList (
- IN UINT32 Value,
- IN UINT32 *ValidList,
- IN UINT32 ValidListLength
- )
-{
- UINT32 index;
-
- if (ValidList == NULL) {
- return FALSE;
- }
-
- for (index = 0; index < ValidListLength; index++) {
- if (ValidList[index] == Value) {
- return TRUE;
- }
- }
-
- return FALSE;
-}
-
-/**
- Check the integrity of VMM Hob List.
-
- @param[in] VmmHobList A pointer to Hob List
-
- @retval TRUE The Hob List is valid.
- @retval FALSE The Hob List is invalid.
-
-**/
-BOOLEAN
-EFIAPI
-ValidateHobList (
- IN CONST VOID *VmmHobList
- )
-{
- EFI_PEI_HOB_POINTERS Hob;
- UINT32 EFI_BOOT_MODE_LIST[] = {
- BOOT_WITH_FULL_CONFIGURATION,
- BOOT_WITH_MINIMAL_CONFIGURATION,
- BOOT_ASSUMING_NO_CONFIGURATION_CHANGES,
- BOOT_WITH_FULL_CONFIGURATION_PLUS_DIAGNOSTICS,
- BOOT_WITH_DEFAULT_SETTINGS,
- BOOT_ON_S4_RESUME,
- BOOT_ON_S5_RESUME,
- BOOT_WITH_MFG_MODE_SETTINGS,
- BOOT_ON_S2_RESUME,
- BOOT_ON_S3_RESUME,
- BOOT_ON_FLASH_UPDATE,
- BOOT_IN_RECOVERY_MODE
- };
-
- UINT32 EFI_RESOURCE_TYPE_LIST[] = {
- EFI_RESOURCE_SYSTEM_MEMORY,
- EFI_RESOURCE_MEMORY_MAPPED_IO,
- EFI_RESOURCE_IO,
- EFI_RESOURCE_FIRMWARE_DEVICE,
- EFI_RESOURCE_MEMORY_MAPPED_IO_PORT,
- EFI_RESOURCE_MEMORY_RESERVED,
- EFI_RESOURCE_IO_RESERVED,
- BZ3937_EFI_RESOURCE_MEMORY_UNACCEPTED
- };
-
- if (VmmHobList == NULL) {
- DEBUG ((DEBUG_ERROR, "HOB: HOB data pointer is NULL\n"));
- return FALSE;
- }
-
- Hob.Raw = (UINT8 *)VmmHobList;
-
- //
- // Parse the HOB list until end of list or matching type is found.
- //
- while (!END_OF_HOB_LIST (Hob)) {
- if (Hob.Header->Reserved != (UINT32)0) {
- DEBUG ((DEBUG_ERROR, "HOB: Hob header Reserved filed should be zero\n"));
- return FALSE;
- }
-
- if (Hob.Header->HobLength == 0) {
- DEBUG ((DEBUG_ERROR, "HOB: Hob header LEANGTH should not be zero\n"));
- return FALSE;
- }
-
- switch (Hob.Header->HobType) {
- case EFI_HOB_TYPE_HANDOFF:
- if (Hob.Header->HobLength != sizeof (EFI_HOB_HANDOFF_INFO_TABLE)) {
- DEBUG ((DEBUG_ERROR, "HOB: Hob length is not equal corresponding hob structure. Type: 0x%04x\n", EFI_HOB_TYPE_HANDOFF));
- return FALSE;
- }
-
- if (IsInValidList (Hob.HandoffInformationTable->BootMode, EFI_BOOT_MODE_LIST, ARRAY_SIZE (EFI_BOOT_MODE_LIST)) == FALSE) {
- DEBUG ((DEBUG_ERROR, "HOB: Unknow HandoffInformationTable BootMode type. Type: 0x%08x\n", Hob.HandoffInformationTable->BootMode));
- return FALSE;
- }
-
- if ((Hob.HandoffInformationTable->EfiFreeMemoryTop % 4096) != 0) {
- DEBUG ((DEBUG_ERROR, "HOB: HandoffInformationTable EfiFreeMemoryTop address must be 4-KB aligned to meet page restrictions of UEFI.\
- Address: 0x%016lx\n", Hob.HandoffInformationTable->EfiFreeMemoryTop));
- return FALSE;
- }
-
- break;
-
- case EFI_HOB_TYPE_RESOURCE_DESCRIPTOR:
- if (Hob.Header->HobLength != sizeof (EFI_HOB_RESOURCE_DESCRIPTOR)) {
- DEBUG ((DEBUG_ERROR, "HOB: Hob length is not equal corresponding hob structure. Type: 0x%04x\n", EFI_HOB_TYPE_RESOURCE_DESCRIPTOR));
- return FALSE;
- }
-
- if (IsInValidList (Hob.ResourceDescriptor->ResourceType, EFI_RESOURCE_TYPE_LIST, ARRAY_SIZE (EFI_RESOURCE_TYPE_LIST)) == FALSE) {
- DEBUG ((DEBUG_ERROR, "HOB: Unknow ResourceDescriptor ResourceType type. Type: 0x%08x\n", Hob.ResourceDescriptor->ResourceType));
- return FALSE;
- }
-
- if ((Hob.ResourceDescriptor->ResourceAttribute & (~(EFI_RESOURCE_ATTRIBUTE_PRESENT |
- EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
- EFI_RESOURCE_ATTRIBUTE_TESTED |
- EFI_RESOURCE_ATTRIBUTE_READ_PROTECTED |
- EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED |
- EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED |
- EFI_RESOURCE_ATTRIBUTE_PERSISTENT |
- EFI_RESOURCE_ATTRIBUTE_SINGLE_BIT_ECC |
- EFI_RESOURCE_ATTRIBUTE_MULTIPLE_BIT_ECC |
- EFI_RESOURCE_ATTRIBUTE_ECC_RESERVED_1 |
- EFI_RESOURCE_ATTRIBUTE_ECC_RESERVED_2 |
- EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
- EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
- EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
- EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
- EFI_RESOURCE_ATTRIBUTE_16_BIT_IO |
- EFI_RESOURCE_ATTRIBUTE_32_BIT_IO |
- EFI_RESOURCE_ATTRIBUTE_64_BIT_IO |
- EFI_RESOURCE_ATTRIBUTE_UNCACHED_EXPORTED |
- EFI_RESOURCE_ATTRIBUTE_READ_PROTECTABLE |
- EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTABLE |
- EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTABLE |
- EFI_RESOURCE_ATTRIBUTE_PERSISTABLE |
- EFI_RESOURCE_ATTRIBUTE_READ_ONLY_PROTECTED |
- EFI_RESOURCE_ATTRIBUTE_READ_ONLY_PROTECTABLE |
- EFI_RESOURCE_ATTRIBUTE_MORE_RELIABLE))) != 0)
- {
- DEBUG ((DEBUG_ERROR, "HOB: Unknow ResourceDescriptor ResourceAttribute type. Type: 0x%08x\n", Hob.ResourceDescriptor->ResourceAttribute));
- return FALSE;
- }
-
- break;
-
- // EFI_HOB_GUID_TYPE is variable length data, so skip check
- case EFI_HOB_TYPE_GUID_EXTENSION:
- break;
-
- case EFI_HOB_TYPE_FV:
- if (Hob.Header->HobLength != sizeof (EFI_HOB_FIRMWARE_VOLUME)) {
- DEBUG ((DEBUG_ERROR, "HOB: Hob length is not equal corresponding hob structure. Type: 0x%04x\n", EFI_HOB_TYPE_FV));
- return FALSE;
- }
-
- break;
-
- case EFI_HOB_TYPE_FV2:
- if (Hob.Header->HobLength != sizeof (EFI_HOB_FIRMWARE_VOLUME2)) {
- DEBUG ((DEBUG_ERROR, "HOB: Hob length is not equal corresponding hob structure. Type: 0x%04x\n", EFI_HOB_TYPE_FV2));
- return FALSE;
- }
-
- break;
-
- case EFI_HOB_TYPE_FV3:
- if (Hob.Header->HobLength != sizeof (EFI_HOB_FIRMWARE_VOLUME3)) {
- DEBUG ((DEBUG_ERROR, "HOB: Hob length is not equal corresponding hob structure. Type: 0x%04x\n", EFI_HOB_TYPE_FV3));
- return FALSE;
- }
-
- break;
-
- case EFI_HOB_TYPE_CPU:
- if (Hob.Header->HobLength != sizeof (EFI_HOB_CPU)) {
- DEBUG ((DEBUG_ERROR, "HOB: Hob length is not equal corresponding hob structure. Type: 0x%04x\n", EFI_HOB_TYPE_CPU));
- return FALSE;
- }
-
- for (UINT32 index = 0; index < 6; index++) {
- if (Hob.Cpu->Reserved[index] != 0) {
- DEBUG ((DEBUG_ERROR, "HOB: Cpu Reserved field will always be set to zero.\n"));
- return FALSE;
- }
- }
-
- break;
-
- default:
- DEBUG ((DEBUG_ERROR, "HOB: Hob type is not know. Type: 0x%04x\n", Hob.Header->HobType));
- return FALSE;
- }
-
- // Get next HOB
- Hob.Raw = (UINT8 *)(Hob.Raw + Hob.Header->HobLength);
- }
-
- return TRUE;
-}
-
-/**
- Processing the incoming HobList for the TDX
-
- Firmware must parse list, and accept the pages of memory before their can be
- use by the guest.
-
- @param[in] VmmHobList The Hoblist pass the firmware
-
- @retval EFI_SUCCESS Process the HobList successfully
- @retval Others Other errors as indicated
-
-**/
-EFI_STATUS
-EFIAPI
-ProcessHobList (
- IN CONST VOID *VmmHobList
- )
-{
- EFI_STATUS Status;
- UINT32 CpusNum;
- EFI_PHYSICAL_ADDRESS PhysicalEnd;
- EFI_PHYSICAL_ADDRESS APsStackStartAddress;
-
- CpusNum = GetCpusNum ();
-
- //
- // If there are mutli-vCPU in a TDX guest, accept memory is split into 2 phases.
- // Phase-1 accepts a small piece of memory by BSP. This piece of memory
- // is used to setup AP's stack.
- // After that phase-2 accepts a big piece of memory by BSP/APs.
- //
- // TDVF supports 4K and 2M accept-page-size. The memory which can be accpeted
- // in 2M accept-page-size must be 2M aligned and multiple 2M. So we align
- // APsStackSize to 2M size aligned.
- //
- if (CpusNum > 1) {
- Status = AcceptMemoryForAPsStack (VmmHobList, APS_STACK_SIZE (CpusNum), &PhysicalEnd);
- ASSERT (Status == EFI_SUCCESS);
- APsStackStartAddress = PhysicalEnd - APS_STACK_SIZE (CpusNum);
- } else {
- PhysicalEnd = 0;
- APsStackStartAddress = 0;
- }
-
- Status = AcceptMemory (VmmHobList, CpusNum, APsStackStartAddress, PhysicalEnd);
- ASSERT (Status == EFI_SUCCESS);
-
- return Status;
-}
-
-/**
- In Tdx guest, some information need to be passed from host VMM to guest
- firmware. For example, the memory resource, etc. These information are
- prepared by host VMM and put in HobList which is described in TdxMetadata.
-
- Information in HobList is treated as external input. From the security
- perspective before it is consumed, it should be validated.
-
- @retval EFI_SUCCESS Successfully process the hoblist
- @retval Others Other error as indicated
-**/
-EFI_STATUS
-EFIAPI
-ProcessTdxHobList (
- VOID
- )
-{
- EFI_STATUS Status;
- VOID *TdHob;
- TD_RETURN_DATA TdReturnData;
-
- TdHob = (VOID *)(UINTN)FixedPcdGet32 (PcdOvmfSecGhcbBase);
- Status = TdCall (TDCALL_TDINFO, 0, 0, 0, &TdReturnData);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- DEBUG ((
- DEBUG_INFO,
- "Intel Tdx Started with (GPAW: %d, Cpus: %d)\n",
- TdReturnData.TdInfo.Gpaw,
- TdReturnData.TdInfo.NumVcpus
- ));
-
- //
- // Validate HobList
- //
- if (ValidateHobList (TdHob) == FALSE) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Process Hoblist to accept memory
- //
- Status = ProcessHobList (TdHob);
-
- return Status;
-}
-
/**
* Build ResourceDescriptorHob for the unaccepted memory region.
* This memory region may be splitted into 2 parts because of lazy accept.
|