diff options
Diffstat (limited to 'EDK/Foundation/Core/Dxe/Library')
| -rw-r--r-- | EDK/Foundation/Core/Dxe/Library/Library.c | 878 |
1 files changed, 878 insertions, 0 deletions
diff --git a/EDK/Foundation/Core/Dxe/Library/Library.c b/EDK/Foundation/Core/Dxe/Library/Library.c new file mode 100644 index 0000000..6014656 --- /dev/null +++ b/EDK/Foundation/Core/Dxe/Library/Library.c @@ -0,0 +1,878 @@ +/*++ + +Copyright (c) 2004 - 2006, Intel Corporation +All rights reserved. This program and the accompanying materials +are licensed and made available under the terms and conditions of the BSD License +which 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. + +Module Name: + + Library.c + +Abstract: + + DXE Core library services. + +--*/ + +#include "Tiano.h" +#include "DxeCore.h" +#include "EfiCommonLib.h" + +DEBUG_CODE ( + UINTN mErrorLevel = EFI_DBUG_MASK | EFI_D_LOAD; +) + +EFI_DEVICE_HANDLE_EXTENDED_DATA mStatusCodeData = { + sizeof (EFI_STATUS_CODE_DATA), + sizeof (EFI_DEVICE_HANDLE_EXTENDED_DATA) - sizeof (EFI_STATUS_CODE_DATA), + EFI_STATUS_CODE_SPECIFIC_DATA_GUID, + NULL +}; + +VOID +CoreReportProgressCodeSpecific ( + IN EFI_STATUS_CODE_VALUE Value, + IN EFI_HANDLE Handle + ) +/*++ + +Routine Description: + + Report status code of type EFI_PROGRESS_CODE by caller ID gEfiDxeServicesTableGuid, + with a handle as additional information. + +Arguments: + + Value - Describes the class/subclass/operation of the hardware or software entity + that the Status Code relates to. + + Handle - Additional information. + +Returns: + + None + +--*/ +{ + mStatusCodeData.DataHeader.Size = sizeof (EFI_DEVICE_HANDLE_EXTENDED_DATA) - sizeof (EFI_STATUS_CODE_DATA); + mStatusCodeData.Handle = Handle; + + if ((gStatusCode != NULL) && (gStatusCode->ReportStatusCode != NULL) ) { + gStatusCode->ReportStatusCode ( + EFI_PROGRESS_CODE, + Value, + 0, + &gEfiDxeServicesTableGuid, + (EFI_STATUS_CODE_DATA *) &mStatusCodeData + ); + } +} + +VOID +CoreReportProgressCode ( + IN EFI_STATUS_CODE_VALUE Value + ) +/*++ + +Routine Description: + + Report status code of type EFI_PROGRESS_CODE by caller ID gEfiDxeServicesTableGuid. + +Arguments: + + Value - Describes the class/subclass/operation of the hardware or software entity + that the Status Code relates to. + +Returns: + + None + +--*/ +{ + if ((gStatusCode != NULL) && (gStatusCode->ReportStatusCode != NULL) ) { + gStatusCode->ReportStatusCode ( + EFI_PROGRESS_CODE, + Value, + 0, + &gEfiDxeServicesTableGuid, + NULL + ); + } +} + + +VOID * +CoreAllocateBootServicesPool ( + IN UINTN AllocationSize + ) +/*++ + +Routine Description: + + Allocate pool of type EfiBootServicesData, the size is specified with AllocationSize. + +Arguments: + + AllocationSize - Size to allocate. + +Returns: + + Pointer of the allocated pool. + +--*/ +{ + VOID *Memory; + + CoreAllocatePool (EfiBootServicesData, AllocationSize, &Memory); + return Memory; +} + + +VOID * +CoreAllocateZeroBootServicesPool ( + IN UINTN AllocationSize + ) +/*++ + +Routine Description: + + Allocate pool of type EfiBootServicesData and zero it, the size is specified with AllocationSize. + +Arguments: + + AllocationSize - Size to allocate. + +Returns: + + Pointer of the allocated pool. + +--*/ +{ + VOID *Memory; + + Memory = CoreAllocateBootServicesPool (AllocationSize); + EfiCommonLibSetMem (Memory, (Memory == NULL) ? 0 : AllocationSize, 0); + return Memory; +} + + +VOID * +CoreAllocateCopyPool ( + IN UINTN AllocationSize, + IN VOID *Buffer + ) +/*++ + +Routine Description: + + Allocate pool of specified size with EfiBootServicesData type, and copy specified buffer to this pool. + +Arguments: + + AllocationSize - Size to allocate. + + Buffer - Specified buffer that will be copy to the allocated pool + +Returns: + + Pointer of the allocated pool. + +--*/ +{ + VOID *Memory; + + Memory = CoreAllocateBootServicesPool (AllocationSize); + EfiCommonLibCopyMem (Memory, Buffer, (Memory == NULL) ? 0 : AllocationSize); + + return Memory; +} + + + +VOID * +CoreAllocateRuntimePool ( + IN UINTN AllocationSize + ) +/*++ + +Routine Description: + + Allocate pool of type EfiRuntimeServicesData, the size is specified with AllocationSize. + +Arguments: + + AllocationSize - Size to allocate. + +Returns: + + Pointer of the allocated pool. + +--*/ +{ + VOID *Memory; + + CoreAllocatePool (EfiRuntimeServicesData, AllocationSize, &Memory); + return Memory; +} + +VOID * +CoreAllocateRuntimeCopyPool ( + IN UINTN AllocationSize, + IN VOID *Buffer + ) +/*++ + +Routine Description: + + Allocate pool of specified size with EfiRuntimeServicesData type, and copy specified buffer to this pool. + +Arguments: + + AllocationSize - Size to allocate. + + Buffer - Specified buffer that will be copy to the allocated pool + +Returns: + + Pointer of the allocated pool. + +--*/ + +{ + VOID *Memory; + + Memory = CoreAllocateRuntimePool (AllocationSize); + EfiCommonLibCopyMem (Memory, Buffer, (Memory == NULL) ? 0 : AllocationSize); + + return Memory; +} + + + +// +// Lock Stuff +// + + + +EFI_STATUS +CoreAcquireLockOrFail ( + IN EFI_LOCK *Lock + ) +/*++ + +Routine Description: + + Initialize a basic mutual exclusion lock. Each lock + provides mutual exclusion access at it's task priority + level. Since there is no-premption (at any TPL) or + multiprocessor support, acquiring the lock only consists + of raising to the locks TPL. + +Arguments: + + Lock - The EFI_LOCK structure to initialize + +Returns: + + EFI_SUCCESS - Lock Owned. + EFI_ACCESS_DENIED - Reentrant Lock Acquisition, Lock not Owned. + +--*/ +{ + if (Lock->Lock != 0) { + // + // Lock is already owned, so bail out + // + return EFI_ACCESS_DENIED; + } + + Lock->OwnerTpl = CoreRaiseTpl (Lock->Tpl); + Lock->Lock += 1; + + return EFI_SUCCESS; +} + + +VOID +CoreAcquireLock ( + IN EFI_LOCK *Lock + ) +/*++ + +Routine Description: + + Raising to the task priority level of the mutual exclusion + lock, and then acquires ownership of the lock. + +Arguments: + + Lock - The lock to acquire + +Returns: + + Lock owned + +--*/ +{ + EFI_STATUS Status; + + Status = CoreAcquireLockOrFail (Lock); + + // + // Lock was already locked. + // + ASSERT_EFI_ERROR (Status); +} + + +VOID +CoreReleaseLock ( + IN EFI_LOCK *Lock + ) +/*++ + +Routine Description: + + Releases ownership of the mutual exclusion lock, and + restores the previous task priority level. + +Arguments: + + Lock - The lock to release + +Returns: + + Lock unowned + +--*/ +{ + EFI_TPL Tpl; + + Tpl = Lock->OwnerTpl; + + ASSERT (Lock->Lock == 1); + Lock->Lock -= 1; + + CoreRestoreTpl (Tpl); +} + + +UINTN +CoreDevicePathSize ( + IN EFI_DEVICE_PATH_PROTOCOL *DevicePath + ) +/*++ + +Routine Description: + + Calculate the size of a whole device path. + +Arguments: + + DevicePath - The pointer to the device path data. + +Returns: + + Size of device path data structure.. + +--*/ +{ + EFI_DEVICE_PATH_PROTOCOL *Start; + + if (DevicePath == NULL) { + return 0; + } + + // + // Search for the end of the device path structure + // + Start = DevicePath; + while (!EfiIsDevicePathEnd (DevicePath)) { + DevicePath = EfiNextDevicePathNode (DevicePath); + } + + // + // Compute the size and add back in the size of the end device path structure + // + return ((UINTN)DevicePath - (UINTN)Start) + sizeof(EFI_DEVICE_PATH_PROTOCOL); +} + + +BOOLEAN +CoreIsDevicePathMultiInstance ( + IN EFI_DEVICE_PATH_PROTOCOL *DevicePath + ) +/*++ + +Routine Description: + Return TRUE is this is a multi instance device path. + +Arguments: + DevicePath - A pointer to a device path data structure. + + +Returns: + TRUE - If DevicePath is multi instance. FALSE - If DevicePath is not multi + instance. + +--*/ +{ + EFI_DEVICE_PATH_PROTOCOL *Node; + + if (DevicePath == NULL) { + return FALSE; + } + + Node = DevicePath; + while (!EfiIsDevicePathEnd (Node)) { + if (EfiIsDevicePathEndInstance (Node)) { + return TRUE; + } + Node = EfiNextDevicePathNode (Node); + } + return FALSE; +} + + + +EFI_DEVICE_PATH_PROTOCOL * +CoreDuplicateDevicePath ( + IN EFI_DEVICE_PATH_PROTOCOL *DevicePath + ) +/*++ + +Routine Description: + Duplicate a new device path data structure from the old one. + +Arguments: + DevicePath - A pointer to a device path data structure. + +Returns: + A pointer to the new allocated device path data. + Caller must free the memory used by DevicePath if it is no longer needed. + +--*/ +{ + EFI_DEVICE_PATH_PROTOCOL *NewDevicePath; + UINTN Size; + + if (DevicePath == NULL) { + return NULL; + } + + // + // Compute the size + // + Size = CoreDevicePathSize (DevicePath); + + // + // Allocate space for duplicate device path + // + NewDevicePath = CoreAllocateCopyPool (Size, DevicePath); + + return NewDevicePath; +} + + + +EFI_DEVICE_PATH_PROTOCOL * +CoreAppendDevicePath ( + IN EFI_DEVICE_PATH_PROTOCOL *Src1, + IN EFI_DEVICE_PATH_PROTOCOL *Src2 + ) +/*++ + +Routine Description: + Function is used to append a Src1 and Src2 together. + +Arguments: + Src1 - A pointer to a device path data structure. + + Src2 - A pointer to a device path data structure. + +Returns: + + A pointer to the new device path is returned. + NULL is returned if space for the new device path could not be allocated from pool. + It is up to the caller to free the memory used by Src1 and Src2 if they are no longer needed. + +--*/ +{ + UINTN Size; + UINTN Size1; + UINTN Size2; + EFI_DEVICE_PATH_PROTOCOL *NewDevicePath; + EFI_DEVICE_PATH_PROTOCOL *SecondDevicePath; + + if (Src1 == NULL && Src2 == NULL) { + return NULL; + } + + // + // Allocate space for the combined device path. It only has one end node of + // length EFI_DEVICE_PATH_PROTOCOL + // + Size1 = CoreDevicePathSize (Src1); + Size2 = CoreDevicePathSize (Src2); + Size = Size1 + Size2 - sizeof(EFI_DEVICE_PATH_PROTOCOL); + + NewDevicePath = CoreAllocateCopyPool (Size, Src1); + if (NewDevicePath != NULL) { + + // + // Over write Src1 EndNode and do the copy + // + SecondDevicePath = (EFI_DEVICE_PATH_PROTOCOL *)((CHAR8 *)NewDevicePath + (Size1 - sizeof(EFI_DEVICE_PATH_PROTOCOL))); + EfiCommonLibCopyMem (SecondDevicePath, Src2, Size2); + } + + return NewDevicePath; +} + + + +EFI_EVENT +CoreCreateProtocolNotifyEvent ( + IN EFI_GUID *ProtocolGuid, + IN EFI_TPL NotifyTpl, + IN EFI_EVENT_NOTIFY NotifyFunction, + IN VOID *NotifyContext, + OUT VOID **Registration, + IN BOOLEAN SignalFlag + ) +/*++ + +Routine Description: + + Create a protocol notification event and return it. + +Arguments: + + ProtocolGuid - Protocol to register notification event on. + + NotifyTpl - Maximum TPL to signal the NotifyFunction. + + NotifyFuncition - EFI notification routine. + + NotifyContext - Context passed into Event when it is created. + + Registration - Registration key returned from RegisterProtocolNotify(). + + SignalFlag - Boolean value to decide whether kick the event after register or not. + +Returns: + + The EFI_EVENT that has been registered to be signaled when a ProtocolGuid + is added to the system. + +--*/ +{ + EFI_STATUS Status; + EFI_EVENT Event; + + // + // Create the event + // + + Status = CoreCreateEvent ( + EFI_EVENT_NOTIFY_SIGNAL, + NotifyTpl, + NotifyFunction, + NotifyContext, + &Event + ); + ASSERT_EFI_ERROR (Status); + + // + // Register for protocol notifactions on this event + // + + Status = CoreRegisterProtocolNotify ( + ProtocolGuid, + Event, + Registration + ); + ASSERT_EFI_ERROR (Status); + + if (SignalFlag) { + // + // Kick the event so we will perform an initial pass of + // current installed drivers + // + CoreSignalEvent (Event); + } + + return Event; +} + +/*++ +Routine Description: + + Initialize a Firmware Volume (FV) Media Device Path node. + + Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum + so as we move to UEFI 2.0 support we must use a mechanism that conforms with + the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed + device path is defined for PIWG extensions of device path. If the code + is compiled to conform with the UEFI 2.0 specification use the new device path + else use the old form for backwards compatability. + +Arguments: + + FvDevicePathNode - Pointer to a FV device path node to initialize + NameGuid - FV file name to use in FvDevicePathNode + +--*/ +VOID +EFIAPI +CoreInitializeFwVolDevicepathNode ( + IN MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvDevicePathNode, + IN EFI_GUID *NameGuid + ) +{ +// +// EDK Defect Start: EDK848 +// +#if 1 +//#if (EFI_SPECIFICATION_VERSION < 0x00020000) +// +// EDK Defect End: EDK848 +// + // + // Use old Device Path that conflicts with UEFI + // + FvDevicePathNode->Header.Type = MEDIA_DEVICE_PATH; + FvDevicePathNode->Header.SubType = MEDIA_FV_FILEPATH_DP; + SetDevicePathNodeLength (&FvDevicePathNode->Header, sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH)); + +#else + // + // Use the new Device path that does not conflict with the UEFI + // + FvDevicePathNode->Piwg.Header.Type = MEDIA_DEVICE_PATH; + FvDevicePathNode->Piwg.Header.SubType = MEDIA_VENDOR_DP; + SetDevicePathNodeLength (&FvDevicePathNode->Piwg.Header, sizeof (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH)); + + // + // Add the GUID for generic PIWG device paths + // + EfiCommonLibCopyMem (&FvDevicePathNode->Piwg.PiwgSpecificDevicePath, &gEfiFrameworkDevicePathGuid, sizeof(EFI_GUID)); + + // + // Add in the FW Vol File Path PIWG defined inforation + // + FvDevicePathNode->Piwg.Type = PIWG_MEDIA_FW_VOL_FILEPATH_DEVICE_PATH_TYPE; + +#endif + EfiCommonLibCopyMem (&FvDevicePathNode->NameGuid, NameGuid, sizeof(EFI_GUID)); +} + +/*++ + +Routine Description: + + Check to see if the Firmware Volume (FV) Media Device Path is valid. + + Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum + so as we move to UEFI 2.0 support we must use a mechanism that conforms with + the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed + device path is defined for PIWG extensions of device path. If the code + is compiled to conform with the UEFI 2.0 specification use the new device path + else use the old form for backwards compatability. The return value to this + function points to a location in FvDevicePathNode and it does not allocate + new memory for the GUID pointer that is returned. + +Arguments: + + @param FvDevicePathNode Pointer to FV device path to check + +Returns: + + NULL - FvDevicePathNode is not valid. + Other - FvDevicePathNode is valid and pointer to NameGuid was returned. + +--*/ +EFI_GUID * +EFIAPI +CoreGetNameGuidFromFwVolDevicePathNode ( + IN MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvDevicePathNode + ) +{ +// +// EDK Defect Start: EDK848 +// +#if 1 +//#if (EFI_SPECIFICATION_VERSION < 0x00020000) +// +// EDK Defect End: EDK848 +// + // + // Use old Device Path that conflicts with UEFI + // + if (DevicePathType (&FvDevicePathNode->Header) == MEDIA_DEVICE_PATH && + DevicePathSubType (&FvDevicePathNode->Header) == MEDIA_FV_FILEPATH_DP) { + return &FvDevicePathNode->NameGuid; + } + +#else + // + // Use the new Device path that does not conflict with the UEFI + // + if (DevicePathType (&FvDevicePathNode->Piwg.Header) == MEDIA_DEVICE_PATH && + DevicePathSubType (&FvDevicePathNode->Piwg.Header) == MEDIA_VENDOR_DP) { + if (EfiCompareGuid (&gEfiFrameworkDevicePathGuid, &FvDevicePathNode->Piwg.PiwgSpecificDevicePath)) { + if (FvDevicePathNode->Piwg.Type == PIWG_MEDIA_FW_VOL_FILEPATH_DEVICE_PATH_TYPE) { + return &FvDevicePathNode->NameGuid; + } + } + } +#endif + return NULL; +} + +DEBUG_CODE ( + +VOID +EfiDebugAssert ( + IN CHAR8 *FileName, + IN INTN LineNumber, + IN CHAR8 *Description + ) +/*++ + +Routine Description: + + Worker function for ASSERT(). If Error Logging hub is loaded, log DEBUG + information; If not, do BREAKPOINT(). + + We use UINT64 buffers due to IPF alignment concerns. + +Arguments: + + FileName - File name of failing routine. + + LineNumber - Line number of failing ASSERT(). + + Description - Descritption, usally the assertion string. + +Returns: + + None + +--*/ +{ + UINT64 Buffer[EFI_STATUS_CODE_DATA_MAX_SIZE]; + + EfiDebugAssertWorker (FileName, LineNumber,Description, sizeof (Buffer), Buffer); + + // + // Check if our pointers are valid. Can't assert because that would recurse. + // + if ((gStatusCode != NULL) && (gStatusCode->ReportStatusCode != NULL) ) { + gStatusCode->ReportStatusCode ( + (EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED), + (EFI_SOFTWARE_DXE_CORE | EFI_SW_EC_ILLEGAL_SOFTWARE_STATE), + 0, + &gEfiDxeServicesTableGuid, + (EFI_STATUS_CODE_DATA *)Buffer + ); + } + + // + // Put break point in module that contained the error. + // + EFI_BREAKPOINT (); +} + + +VOID +EfiDebugVPrint ( + IN UINTN ErrorLevel, + IN CHAR8 *Format, + IN VA_LIST Marker + ) +/*++ + +Routine Description: + + Worker function for DEBUG(). If Error Logging hub is loaded, DEBUG + information will be logged. If Error Logging hub is not loaded, do nothing. + + We use UINT64 buffers due to IPF alignment concerns. + +Arguments: + + ErrorLevel - If error level is set do the debug print. + + Format - String to use for the print, followed by Print arguments. + + Marker - VarArgs + +Returns: + + None + +--*/ +{ + UINT64 Buffer[EFI_STATUS_CODE_DATA_MAX_SIZE]; + + if (!(mErrorLevel & ErrorLevel)) { + return; + } + + EfiDebugVPrintWorker (ErrorLevel, Format, Marker, sizeof (Buffer), Buffer); + + // + // Check if our pointers are valid. Can't assert because that would recurse. + // + if ((gStatusCode != NULL) && (gStatusCode->ReportStatusCode != NULL) ) { + gStatusCode->ReportStatusCode ( + EFI_DEBUG_CODE, + (EFI_SOFTWARE_DXE_CORE | EFI_DC_UNSPECIFIED), + 0, + &gEfiDxeServicesTableGuid, + (EFI_STATUS_CODE_DATA *)Buffer + ); + } +} + + +VOID +EfiDebugPrint ( + IN UINTN ErrorLevel, + IN CHAR8 *Format, + ... + ) +/*++ + +Routine Description: + + Wrapper for EfiDebugVPrint () + +Arguments: + + ErrorLevel - If error level is set do the debug print. + + Format - String to use for the print, followed by Print arguments. + + ... - Print arguments. + +Returns: + + None + +--*/ +{ + VA_LIST Marker; + + VA_START (Marker, Format); + EfiDebugVPrint (ErrorLevel, Format, Marker); + VA_END (Marker); +} +) |