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OpalSecurity
Function Table
| Address | Name | Description |
|---|---|---|
| OpalReadCmosDebugLevel | ||
| OpalGetHobList | ||
| OpalSecurityDriverInit | ||
| OpalSecurityBindingStart | ||
| OpalSecurityBindingStop | ||
| OpalSecurityAllocBuffer | ||
| OpalSecurityReceiveResponse | ||
| OpalSecuritySendCommand | ||
| TcgStorageIoRecv | ||
| TcgStorageIoSend | ||
| OpalDebugAssertPrint | ||
| OpalAssertHandler | ||
| OpalCompareGuid | ||
| OpalReadUnaligned64 | ||
| External | global variables set by the UEFI Boot Services Table Library | |
| extern | EFI_HANDLE gImageHandle; | |
| STATIC | EFI_BOOT_SERVICES *mBootServices = NULL; | |
| Forward | declarations | |
| STATIC | UINTN | |
| Module | Entry Point | |
| Cache | UEFI service table pointers locally | |
| if | (mSystemTable == NULL) { | |
| Allocate | a protocol instance structure | |
| Status | = mBootServices->AllocatePool ( | |
| Populate | the protocol dispatch table with binding Start/Stop | |
| Install | the Opal Security Protocol onto the image handle | |
| Set | the MemoryOverwriteRequestControl variable per UEFI spec | |
| Driver | Binding Start | |
| Zero | the buffer used for TCG command data | |
| OpalMemset | (Buffer, 0, sizeof (Buffer)); | |
| Check | if the controller supports TCG Storage IO (type == 1) | |
| if | (StorageIoType == 1) | |
| Copy | the device context from the controller handle | |
| CopyMem | (Buffer, (VOID )((UINTN)ControllerHandle + 35), 4 sizeof (UINT128)); | |
| Verify | TCG SSC feature bit in Level 0 discovery data (bit 94) | |
| if | ((Buffer[94] & 1) == 0) { | |
| Check | if the protocol already exists on this controller | |
| Allocate | the child protocol instance (32 bytes) | |
| Initialize | child protocol with TCG send/recv handlers | |
| Install | the child protocol | |
| If | Opal Security is enabled, perform initial security exchange | |
| if | ((mOpalSecurityEnabled & 1) != 0 && | |
| Driver | Binding Stop | |
| Buffer | Allocation for TCG Security Protocol | |
| Issue | IF-RECV (Level 0 Discovery) to read TCG capabilities | |
| Process | TCG Security Response (IF-RECV data parsing) | |
| Read | descriptor count from Level 0 Discovery response | |
| NumDescriptors | = _byteswap_ushort ((UINT16 )(DiscoveryBuffer + 6)); | |
| Parse | TCG Level 0 Discovery descriptors | |
| for | (Index = 0; Index < NumDescriptors; Index++) | |
| TCG | Storage SSC feature found | send IF-SEND command |
| TmpBuffer | = 0; | |
| Opal | SSC v2 (Pyrite) feature | issue IF-RECV |
| Status | = OpalSecuritySendCommand (Protocol); | |
| TCG | Storage IF-SEND Command | |
| CommandIteration | = 256; | |
| Verify | the COM ID iteration matches | |
| while | (CommandIteration != _byteswap_ushort ((UINT16 )(CmdResponseBuffer + 2))) | |
| Final | IF-RECV with Level 1 discovery ProtocolId | |
| SmallBuffer | = NULL; | |
| TCG | IF-RECV (receive security data without transfer length) | |
| Build | TCG IF-RECV packet | |
| TCG | IF-SEND (send security data with transfer length) | |
| Debug | Support Functions | |
| HOB | List Retrieval | |
| Utility | Functions |
Generated by HR650X BIOS Decompilation Project