diff options
Diffstat (limited to 'MdeModulePkg/Library/PiDxeS3BootScriptLib/BootScriptSave.c')
| -rw-r--r-- | MdeModulePkg/Library/PiDxeS3BootScriptLib/BootScriptSave.c | 1852 |
1 files changed, 1852 insertions, 0 deletions
diff --git a/MdeModulePkg/Library/PiDxeS3BootScriptLib/BootScriptSave.c b/MdeModulePkg/Library/PiDxeS3BootScriptLib/BootScriptSave.c new file mode 100644 index 0000000000..8769509f76 --- /dev/null +++ b/MdeModulePkg/Library/PiDxeS3BootScriptLib/BootScriptSave.c @@ -0,0 +1,1852 @@ +/** @file
+ Save the S3 data to S3 boot script.
+
+ Copyright (c) 2006 - 2010, 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 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.
+
+**/
+#include "InternalBootScriptLib.h"
+
+/**
+
+ Data structure usage:
+
+ +------------------------------+<-- PcdS3BootScriptTablePrivateDataPtr
+ | SCRIPT_TABLE_PRIVATE_DATA |
+ | TableBase |---
+ | TableLength |--|--
+ | AtRuntime | | |
+ | InSmm | | |
+ +------------------------------+ | |
+ | |
+ +------------------------------+<-- |
+ | EFI_BOOT_SCRIPT_TABLE_HEADER | |
+ | TableLength |----|--
+ +------------------------------+ | |
+ | ...... | | |
+ +------------------------------+<---- |
+ | EFI_BOOT_SCRIPT_TERMINATE | |
+ +------------------------------+<------
+
+**/
+
+SCRIPT_TABLE_PRIVATE_DATA *mS3BootScriptTablePtr;
+EFI_EVENT mEnterRuntimeEvent;
+//
+// Allocate local copy in SMM because we can not use mS3BootScriptTablePtr when we AtRuntime in InSmm.
+//
+SCRIPT_TABLE_PRIVATE_DATA mS3BootScriptTable;
+UINTN mLockBoxLength;
+
+EFI_GUID mBootScriptDataGuid = {
+ 0xaea6b965, 0xdcf5, 0x4311, 0xb4, 0xb8, 0xf, 0x12, 0x46, 0x44, 0x94, 0xd2
+};
+
+EFI_GUID mBootScriptHeaderDataGuid = {
+ 0x1810ab4a, 0x2314, 0x4df6, 0x81, 0xeb, 0x67, 0xc6, 0xec, 0x5, 0x85, 0x91
+};
+
+/**
+ This is an internal function to add a terminate node the entry, recalculate the table
+ length and fill into the table.
+
+ @return the base address of the boot script tble.
+ **/
+UINT8*
+S3BootScriptInternalCloseTable (
+ VOID
+ )
+{
+ UINT8 *S3TableBase;
+ EFI_BOOT_SCRIPT_TERMINATE ScriptTerminate;
+ EFI_BOOT_SCRIPT_TABLE_HEADER *ScriptTableInfo;
+ S3TableBase = mS3BootScriptTablePtr->TableBase;
+
+ if (S3TableBase == NULL) {
+ //
+ // the table is not exist
+ //
+ return S3TableBase;
+ }
+ //
+ // Append the termination entry.
+ //
+ ScriptTerminate.OpCode = S3_BOOT_SCRIPT_LIB_TERMINATE_OPCODE;
+ ScriptTerminate.Length = (UINT8) sizeof (EFI_BOOT_SCRIPT_TERMINATE);
+ CopyMem (mS3BootScriptTablePtr->TableBase + mS3BootScriptTablePtr->TableLength, &ScriptTerminate, sizeof (EFI_BOOT_SCRIPT_TERMINATE));
+ //
+ // fill the table length
+ //
+ ScriptTableInfo = (EFI_BOOT_SCRIPT_TABLE_HEADER*)(mS3BootScriptTablePtr->TableBase);
+ ScriptTableInfo->TableLength = mS3BootScriptTablePtr->TableLength + sizeof (EFI_BOOT_SCRIPT_TERMINATE);
+
+
+
+ return S3TableBase;
+ //
+ // NOTE: Here we did NOT adjust the mS3BootScriptTablePtr->TableLength to
+ // mS3BootScriptTablePtr->TableLength + sizeof (EFI_BOOT_SCRIPT_TERMINATE). Because
+ // maybe in runtime, we still need add entries into the table, and the runtime entry should be
+ // added start before this TERMINATE node.
+ //
+}
+
+/**
+ This function save boot script data to LockBox.
+ 1. BootSriptPrivate data, BootScript data - Image and DispatchContext are handled by platform.
+ 2. BootScriptExecutor, BootScriptExecutor context
+ - ACPI variable - (PI version) sould be handled by SMM driver. S3 Page table is handled here.
+ - ACPI variable - framework version is already handled by Framework CPU driver.
+**/
+VOID
+SaveBootScriptDataToLockBox (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ //
+ // mS3BootScriptTablePtr->TableLength does not include EFI_BOOT_SCRIPT_TERMINATE, because we need add entry at runtime.
+ // Save all info here, just in case that no one will add boot script entry in SMM.
+ //
+ Status = SaveLockBox (
+ &mBootScriptDataGuid,
+ (VOID *)mS3BootScriptTablePtr->TableBase,
+ mS3BootScriptTablePtr->TableLength + sizeof(EFI_BOOT_SCRIPT_TERMINATE)
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ Status = SetLockBoxAttributes (&mBootScriptDataGuid, LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE);
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Just need save TableBase.
+ // Do not update other field because they will NOT be used in S3.
+ //
+ Status = SaveLockBox (
+ &mBootScriptHeaderDataGuid,
+ (VOID *)&mS3BootScriptTablePtr->TableBase,
+ sizeof(mS3BootScriptTablePtr->TableBase)
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ Status = SetLockBoxAttributes (&mBootScriptHeaderDataGuid, LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE);
+ ASSERT_EFI_ERROR (Status);
+}
+
+/**
+ This is the Event call back function to notify the Library the system is entering
+ run time phase.
+
+ @param Event Pointer to this event
+ @param Context Event hanlder private data
+ **/
+VOID
+EFIAPI
+S3BootScriptEventCallBack (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ EFI_STATUS Status;
+ VOID *Interface;
+
+ //
+ // Try to locate it because EfiCreateProtocolNotifyEvent will trigger it once when registration.
+ // Just return if it is not found.
+ //
+ Status = gBS->LocateProtocol (
+ &gEfiDxeSmmReadyToLockProtocolGuid,
+ NULL,
+ &Interface
+ );
+ if (EFI_ERROR (Status)) {
+ return ;
+ }
+
+ //
+ // Here we should tell the library that we are enter into runtime phase. and
+ // the memory page number occupied by the table should not grow anymore.
+ //
+ if (!mS3BootScriptTablePtr->AtRuntime) {
+ //
+ // In boot time, we need not write the terminate node when adding a node to boot scipt table
+ // or else, that will impact the performance. However, in runtime, we should append terminate
+ // node on every add to boot script table
+ //
+ S3BootScriptInternalCloseTable ();
+ mS3BootScriptTablePtr->AtRuntime = TRUE;
+
+ //
+ // Save BootScript data to lockbox
+ //
+ SaveBootScriptDataToLockBox ();
+ }
+}
+/**
+ This is the Event call back function is triggered in SMM to notify the Library the system is entering
+ run time phase and set InSmm flag.
+
+ @param Protocol Points to the protocol's unique identifier
+ @param Interface Points to the interface instance
+ @param Handle The handle on which the interface was installed
+
+ @retval EFI_SUCCESS SmmEventCallback runs successfully
+ **/
+EFI_STATUS
+EFIAPI
+S3BootScriptSmmEventCallBack (
+ IN CONST EFI_GUID *Protocol,
+ IN VOID *Interface,
+ IN EFI_HANDLE Handle
+ )
+{
+ //
+ // Check if it is already done
+ //
+ if (mS3BootScriptTablePtr == &mS3BootScriptTable) {
+ return EFI_SUCCESS;
+ }
+
+ //
+ // Last chance to call-out, just make sure AtRuntime is set
+ //
+ S3BootScriptEventCallBack (NULL, NULL);
+
+ //
+ // Save a local copy
+ //
+ CopyMem (&mS3BootScriptTable, mS3BootScriptTablePtr, sizeof(*mS3BootScriptTablePtr));
+ //
+ // We should not use ACPINvs copy, because it is not safe.
+ //
+ mS3BootScriptTablePtr = &mS3BootScriptTable;
+
+ //
+ // Set InSmm, we allow boot script update when InSmm, but not allow boot script outside SMM.
+ // InSmm will only be checked if AtRuntime is TRUE.
+ //
+ mS3BootScriptTablePtr->InSmm = TRUE;
+
+ //
+ // Record LockBoxLength
+ //
+ mLockBoxLength = mS3BootScriptTable.TableLength + sizeof(EFI_BOOT_SCRIPT_TERMINATE);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Library Constructor.
+ this function just identify it is a smm driver or non-smm driver linked against
+ with the library
+
+ @param ImageHandle The firmware allocated handle for the EFI image.
+ @param SystemTable A pointer to the EFI System Table.
+
+ @retval RETURN_SUCCESS Allocate the global memory space to store S3 boot script table private data
+ @retval RETURN_OUT_OF_RESOURCES No enough memory to allocated.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptLibInitialize (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ SCRIPT_TABLE_PRIVATE_DATA *S3TablePtr;
+ VOID *Registration;
+ EFI_SMM_BASE2_PROTOCOL *SmmBase2;
+ BOOLEAN InSmm;
+ EFI_SMM_SYSTEM_TABLE2 *Smst;
+ EFI_PHYSICAL_ADDRESS Buffer;
+
+ S3TablePtr = (SCRIPT_TABLE_PRIVATE_DATA*)(UINTN)PcdGet64(PcdS3BootScriptTablePrivateDataPtr);
+ //
+ // The Boot script private data is not be initialized. create it
+ //
+ if (S3TablePtr == 0) {
+ Buffer = SIZE_4GB - 1;
+ Status = gBS->AllocatePages (
+ AllocateMaxAddress,
+ EfiACPIMemoryNVS,
+ EFI_SIZE_TO_PAGES(sizeof(SCRIPT_TABLE_PRIVATE_DATA)),
+ &Buffer
+ );
+ if (EFI_ERROR (Status)) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ S3TablePtr = (VOID *) (UINTN) Buffer;
+
+ PcdSet64 (PcdS3BootScriptTablePrivateDataPtr, (UINT64) (UINTN)S3TablePtr);
+ ZeroMem (S3TablePtr, sizeof(SCRIPT_TABLE_PRIVATE_DATA));
+ //
+ // create event to notify the library system enter the runtime phase
+ //
+ mEnterRuntimeEvent = EfiCreateProtocolNotifyEvent (
+ &gEfiDxeSmmReadyToLockProtocolGuid,
+ TPL_CALLBACK,
+ S3BootScriptEventCallBack,
+ NULL,
+ &Registration
+ );
+ ASSERT (mEnterRuntimeEvent != NULL);
+ }
+ mS3BootScriptTablePtr = S3TablePtr;
+
+ //
+ // Get InSmm, we need to register SmmReadyToLock if this library is linked to SMM driver.
+ //
+ Status = gBS->LocateProtocol (&gEfiSmmBase2ProtocolGuid, NULL, (VOID**) &SmmBase2);
+ if (EFI_ERROR (Status)) {
+ return RETURN_SUCCESS;
+ }
+ Status = SmmBase2->InSmm (SmmBase2, &InSmm);
+ if (EFI_ERROR (Status)) {
+ return RETURN_SUCCESS;
+ }
+ if (!InSmm) {
+ return RETURN_SUCCESS;
+ }
+ //
+ // Good, we are in SMM
+ //
+ Status = SmmBase2->GetSmstLocation (SmmBase2, &Smst);
+ if (EFI_ERROR (Status)) {
+ return RETURN_SUCCESS;
+ }
+
+ //
+ // Then register event after lock
+ //
+ Registration = NULL;
+ Status = Smst->SmmRegisterProtocolNotify (
+ &gEfiSmmReadyToLockProtocolGuid,
+ S3BootScriptSmmEventCallBack,
+ &Registration
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return RETURN_SUCCESS;
+}
+/**
+ To get the start address from which a new boot time s3 boot script entry will write into.
+ If the table is not exist, the functio will first allocate a buffer for the table
+ If the table buffer is not enough for the new entry, in non-smm mode, the funtion will
+ invoke reallocate to enlarge buffer.
+
+ @param EntryLength the new entry length.
+
+ @retval the address from which the a new s3 boot script entry will write into
+ **/
+UINT8*
+S3BootScriptGetBootTimeEntryAddAddress (
+ UINT8 EntryLength
+ )
+{
+ EFI_PHYSICAL_ADDRESS S3TableBase;
+ EFI_PHYSICAL_ADDRESS NewS3TableBase;
+ UINT8 *NewEntryPtr;
+ UINT32 TableLength;
+ UINT16 PageNumber;
+ EFI_STATUS Status;
+ EFI_BOOT_SCRIPT_TABLE_HEADER *ScriptTableInfo;
+
+ S3TableBase = (EFI_PHYSICAL_ADDRESS)(UINTN)(mS3BootScriptTablePtr->TableBase);
+ if (S3TableBase == 0) {
+ // The table is not exist. This is the first to add entry.
+ // Allocate ACPI script table space under 4G memory. We need it to save
+ // some settings done by CSM, which runs after normal script table closed
+ //
+ S3TableBase = 0xffffffff;
+ Status = gBS->AllocatePages (
+ AllocateMaxAddress,
+ EfiACPIMemoryNVS,
+ 2 + PcdGet16(PcdS3BootScriptRuntimeTableReservePageNumber),
+ (EFI_PHYSICAL_ADDRESS*)&S3TableBase
+ );
+
+ if (EFI_ERROR(Status)) {
+ ASSERT_EFI_ERROR (Status);
+ return 0;
+ }
+ //
+ // Fill Table Header
+ //
+ ScriptTableInfo = (EFI_BOOT_SCRIPT_TABLE_HEADER*)(UINTN)S3TableBase;
+ ScriptTableInfo->OpCode = S3_BOOT_SCRIPT_LIB_TABLE_OPCODE;
+ ScriptTableInfo->Length = (UINT8) sizeof (EFI_BOOT_SCRIPT_TABLE_HEADER);
+ ScriptTableInfo->TableLength = 0; // will be calculate at CloseTable
+ mS3BootScriptTablePtr->TableLength = sizeof (EFI_BOOT_SCRIPT_TABLE_HEADER);
+ mS3BootScriptTablePtr->TableBase = (UINT8*)(UINTN)S3TableBase;
+ mS3BootScriptTablePtr->TableMemoryPageNumber = (UINT16)(2 + PcdGet16(PcdS3BootScriptRuntimeTableReservePageNumber));
+ }
+
+ // Here we do not count the reserved memory for runtime script table.
+ PageNumber = (UINT16)(mS3BootScriptTablePtr->TableMemoryPageNumber - PcdGet16(PcdS3BootScriptRuntimeTableReservePageNumber));
+ TableLength = mS3BootScriptTablePtr->TableLength;
+ if ((UINT32)(PageNumber * EFI_PAGE_SIZE) < (TableLength + EntryLength)) {
+ //
+ // The buffer is too small to hold the table, Reallocate the buffer
+ //
+ NewS3TableBase = 0xffffffff;
+ Status = gBS->AllocatePages (
+ AllocateMaxAddress,
+ EfiACPIMemoryNVS,
+ 2 + PageNumber + PcdGet16(PcdS3BootScriptRuntimeTableReservePageNumber),
+ (EFI_PHYSICAL_ADDRESS*)&NewS3TableBase
+ );
+
+ if (EFI_ERROR(Status)) {
+ ASSERT_EFI_ERROR (Status);
+ return 0;
+ }
+
+ CopyMem ((VOID*)(UINTN)NewS3TableBase, (VOID*)(UINTN)S3TableBase, TableLength);
+ gBS->FreePages (S3TableBase, mS3BootScriptTablePtr->TableMemoryPageNumber);
+
+ mS3BootScriptTablePtr->TableBase = (UINT8*)(UINTN)NewS3TableBase;
+ mS3BootScriptTablePtr->TableMemoryPageNumber = (UINT16) (2 + PageNumber + PcdGet16(PcdS3BootScriptRuntimeTableReservePageNumber));
+ }
+ //
+ // calculate the the start address for the new entry.
+ //
+ NewEntryPtr = mS3BootScriptTablePtr->TableBase + TableLength;
+
+ //
+ // update the table lenghth
+ //
+ mS3BootScriptTablePtr->TableLength = TableLength + EntryLength;
+
+ //
+ // In the boot time, we will not append the termination entry to the boot script
+ // table until the callers think there is no boot time data that should be added and
+ // it is caller's responsibility to explicit call the CloseTable.
+ //
+ //
+
+ return NewEntryPtr;
+}
+/**
+ To get the start address from which a new runtime s3 boot script entry will write into.
+ In this case, it should be ensured that there is enough buffer to hold the entry.
+
+ @param EntryLength the new entry length.
+
+ @retval the address from which the a new s3 runtime script entry will write into
+ **/
+UINT8*
+S3BootScriptGetRuntimeEntryAddAddress (
+ UINT8 EntryLength
+ )
+{
+ UINT8 *NewEntryPtr;
+
+ NewEntryPtr = NULL;
+ //
+ // Check if the memory range reserved for S3 Boot Script table is large enough to hold the node.
+ //
+ if (mS3BootScriptTablePtr->TableLength + EntryLength + sizeof (EFI_BOOT_SCRIPT_TERMINATE) <= EFI_PAGES_TO_SIZE((UINT32)(mS3BootScriptTablePtr->TableMemoryPageNumber))) {
+ NewEntryPtr = mS3BootScriptTablePtr->TableBase + mS3BootScriptTablePtr->TableLength;
+ mS3BootScriptTablePtr->TableLength = mS3BootScriptTablePtr->TableLength + EntryLength;
+ //
+ // Append a terminate node on every insert
+ //
+ S3BootScriptInternalCloseTable ();
+ }
+ return (UINT8*)NewEntryPtr;
+}
+/**
+ To get the start address from which a new s3 boot script entry will write into.
+
+ @param EntryLength the new entry length.
+
+ @retval the address from which the a new s3 runtime script entry will write into
+ **/
+UINT8*
+S3BootScriptGetEntryAddAddress (
+ UINT8 EntryLength
+ )
+{
+ UINT8* NewEntryPtr;
+ EFI_BOOT_SCRIPT_TABLE_HEADER TableHeader;
+ EFI_STATUS Status;
+
+ if (mS3BootScriptTablePtr->AtRuntime) {
+ //
+ // We need check InSmm when AtRuntime, because after SmmReadyToLock, only SMM driver is allowed to write boot script.
+ //
+ if (!mS3BootScriptTablePtr->InSmm) {
+ //
+ // Add DEBUG ERROR, so that we can find it at boot time.
+ // Do not use ASSERT, because we may have test invoke this interface.
+ //
+ DEBUG ((EFI_D_ERROR, "FATAL ERROR: Set boot script after ReadyToLock!!!\n"));
+ return NULL;
+ }
+
+ //
+ // NOTE: OS will restore ACPINvs data. After S3, the table length in mS3BootScriptTable (SMM) is different with
+ // table length in BootScriptTable header (ACPINvs).
+ // So here we need sync them. We choose ACPINvs table length, because we want to override the boot script saved
+ // in SMM every time.
+ //
+ ASSERT (mS3BootScriptTablePtr == &mS3BootScriptTable);
+ CopyMem ((VOID*)&TableHeader, (VOID*)mS3BootScriptTablePtr->TableBase, sizeof(EFI_BOOT_SCRIPT_TABLE_HEADER));
+ if (mS3BootScriptTablePtr->TableLength + sizeof(EFI_BOOT_SCRIPT_TERMINATE) != TableHeader.TableLength) {
+ //
+ // Restore it to use original value
+ //
+ RestoreLockBox (&mBootScriptDataGuid, NULL, NULL);
+ //
+ // Copy it again to get original value
+ // NOTE: We should NOT use TableHeader.TableLength, because it is already updated to be whole length.
+ //
+ mS3BootScriptTablePtr->TableLength = (UINT32)(mLockBoxLength - sizeof(EFI_BOOT_SCRIPT_TERMINATE));
+ }
+
+ NewEntryPtr = S3BootScriptGetRuntimeEntryAddAddress (EntryLength);
+ //
+ // Now the length field is updated, need sync to lockbox.
+ // So in S3 resume, the data can be restored correctly.
+ //
+ CopyMem ((VOID*)&TableHeader, (VOID*)mS3BootScriptTablePtr->TableBase, sizeof(EFI_BOOT_SCRIPT_TABLE_HEADER));
+ Status = UpdateLockBox (
+ &mBootScriptDataGuid,
+ OFFSET_OF(EFI_BOOT_SCRIPT_TABLE_HEADER, TableLength),
+ &TableHeader.TableLength,
+ sizeof(TableHeader.TableLength)
+ );
+ ASSERT_EFI_ERROR (Status);
+ } else {
+ NewEntryPtr = S3BootScriptGetBootTimeEntryAddAddress (EntryLength);
+ }
+ return NewEntryPtr;
+
+}
+
+/**
+ Sync BootScript LockBox data.
+**/
+VOID
+SyncBootScript (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+
+ if (!mS3BootScriptTablePtr->AtRuntime || !mS3BootScriptTablePtr->InSmm) {
+ return ;
+ }
+ //
+ // Update Terminate
+ // So in S3 resume, the data can be restored correctly.
+ //
+ Status = UpdateLockBox (
+ &mBootScriptDataGuid,
+ mLockBoxLength - sizeof(EFI_BOOT_SCRIPT_TERMINATE),
+ (VOID *)((UINTN)mS3BootScriptTablePtr->TableBase + mLockBoxLength - sizeof(EFI_BOOT_SCRIPT_TERMINATE)),
+ sizeof(EFI_BOOT_SCRIPT_TERMINATE)
+ );
+ ASSERT_EFI_ERROR (Status);
+}
+
+/**
+ This is an function to close the S3 boot script table. The function could only be called in
+ BOOT time phase. To comply with the Framework spec definition on
+ EFI_BOOT_SCRIPT_SAVE_PROTOCOL.CloseTable(), this function will fulfill following things:
+ 1. Closes the specified boot script table
+ 2. It allocates a new memory pool to duplicate all the boot scripts in the specified table.
+ Once this function is called, the table maintained by the library will be destroyed
+ after it is copied into the allocated pool.
+ 3. Any attempts to add a script record after calling this function will cause a new table
+ to be created by the library.
+ 4. The base address of the allocated pool will be returned in Address. Note that after
+ using the boot script table, the CALLER is responsible for freeing the pool that is allocated
+ by this function.
+
+ In Spec PI1.1, this EFI_BOOT_SCRIPT_SAVE_PROTOCOL.CloseTable() is retired. To provides this API for now is
+ for Framework Spec compatibility.
+
+ If anyone does call CloseTable() on a real platform, then the caller is responsible for figuring out
+ how to get the script to run on an S3 resume because the boot script maintained by the lib will be
+ destroyed.
+
+ @return the base address of the new copy of the boot script tble.
+ @note this function could only called in boot time phase
+
+**/
+UINT8*
+EFIAPI
+S3BootScriptCloseTable (
+ VOID
+ )
+{
+ UINT8 *S3TableBase;
+ UINT32 TableLength;
+ UINT8 *Buffer;
+ EFI_STATUS Status;
+ EFI_BOOT_SCRIPT_TABLE_HEADER *ScriptTableInfo;
+
+ S3TableBase = mS3BootScriptTablePtr->TableBase;
+ if (S3TableBase == 0) {
+ return 0;
+ }
+ //
+ // Append the termination record the S3 boot script table
+ //
+ S3BootScriptInternalCloseTable();
+ TableLength = mS3BootScriptTablePtr->TableLength + sizeof (EFI_BOOT_SCRIPT_TERMINATE);
+ //
+ // Allocate the buffer and copy the boot script to the buffer.
+ //
+ Status = gBS->AllocatePool (
+ EfiBootServicesData,
+ (UINTN)TableLength,
+ (VOID **) &Buffer
+ );
+ if (EFI_ERROR (Status)) {
+ return 0;
+ }
+ CopyMem (Buffer, S3TableBase, TableLength);
+
+ //
+ // Destroy the table maintained by the library so that the next write operation
+ // will write the record to the first entry of the table.
+ //
+ // Fill the table header.
+ ScriptTableInfo = (EFI_BOOT_SCRIPT_TABLE_HEADER*)S3TableBase;
+ ScriptTableInfo->OpCode = S3_BOOT_SCRIPT_LIB_TABLE_OPCODE;
+ ScriptTableInfo->Length = (UINT8) sizeof (EFI_BOOT_SCRIPT_TABLE_HEADER);
+ ScriptTableInfo->TableLength = 0; // will be calculate at close the table
+
+ mS3BootScriptTablePtr->TableLength = sizeof (EFI_BOOT_SCRIPT_TABLE_HEADER);
+ return Buffer;
+}
+/**
+ Save I/O write to boot script
+
+ @param Width The width of the I/O operations.Enumerated in S3_BOOT_SCRIPT_LIB_WIDTH.
+ @param Address The base address of the I/O operations.
+ @param Count The number of I/O operations to perform.
+ @param Buffer The source buffer from which to write data.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveIoWrite (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN VOID *Buffer
+ )
+
+{
+ UINT8 Length;
+ UINT8 *Script;
+ UINT8 WidthInByte;
+ EFI_BOOT_SCRIPT_IO_WRITE ScriptIoWrite;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_IO_WRITE) + (WidthInByte * Count));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // save script data
+ //
+ ScriptIoWrite.OpCode = EFI_BOOT_SCRIPT_IO_WRITE_OPCODE;
+ ScriptIoWrite.Length = Length;
+ ScriptIoWrite.Width = Width;
+ ScriptIoWrite.Address = Address;
+ ScriptIoWrite.Count = (UINT32) Count;
+ CopyMem ((VOID*)Script, (VOID*)&ScriptIoWrite, sizeof(EFI_BOOT_SCRIPT_IO_WRITE));
+ CopyMem ((VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_IO_WRITE)), Buffer, WidthInByte * Count);
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+
+/**
+ Adds a record for an I/O modify operation into a S3 boot script table
+
+ @param Width The width of the I/O operations.Enumerated in S3_BOOT_SCRIPT_LIB_WIDTH.
+ @param Address The base address of the I/O operations.
+ @param Data A pointer to the data to be OR-ed.
+ @param DataMask A pointer to the data mask to be AND-ed with the data read from the register
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveIoReadWrite (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT64 Address,
+ IN VOID *Data,
+ IN VOID *DataMask
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ UINT8 WidthInByte;
+ EFI_BOOT_SCRIPT_IO_READ_WRITE ScriptIoReadWrite;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_IO_READ_WRITE) + (WidthInByte * 2));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptIoReadWrite.OpCode = EFI_BOOT_SCRIPT_IO_READ_WRITE_OPCODE;
+ ScriptIoReadWrite.Length = Length;
+ ScriptIoReadWrite.Width = Width;
+ ScriptIoReadWrite.Address = Address;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptIoReadWrite, sizeof(EFI_BOOT_SCRIPT_IO_READ_WRITE));
+ CopyMem ((VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_IO_READ_WRITE)), Data, WidthInByte);
+ CopyMem ((VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_IO_READ_WRITE) + WidthInByte), DataMask, WidthInByte);
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Adds a record for a memory write operation into a specified boot script table.
+
+ @param Width The width of the I/O operations.Enumerated in S3_BOOT_SCRIPT_LIB_WIDTH.
+ @param Address The base address of the memory operations
+ @param Count The number of memory operations to perform.
+ @param Buffer The source buffer from which to write the data.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveMemWrite (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN VOID *Buffer
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ UINT8 WidthInByte;
+ EFI_BOOT_SCRIPT_MEM_WRITE ScriptMemWrite;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_MEM_WRITE) + (WidthInByte * Count));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptMemWrite.OpCode = EFI_BOOT_SCRIPT_MEM_WRITE_OPCODE;
+ ScriptMemWrite.Length = Length;
+ ScriptMemWrite.Width = Width;
+ ScriptMemWrite.Address = Address;
+ ScriptMemWrite.Count = (UINT32) Count;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptMemWrite, sizeof(EFI_BOOT_SCRIPT_MEM_WRITE));
+ CopyMem ((VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_MEM_WRITE)), Buffer, WidthInByte * Count);
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Adds a record for a memory modify operation into a specified boot script table.
+
+ @param Width The width of the I/O operations.Enumerated in S3_BOOT_SCRIPT_LIB_WIDTH.
+ @param Address The base address of the memory operations. Address needs alignment if required
+ @param Data A pointer to the data to be OR-ed.
+ @param DataMask A pointer to the data mask to be AND-ed with the data read from the register.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveMemReadWrite (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT64 Address,
+ IN VOID *Data,
+ IN VOID *DataMask
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ UINT8 WidthInByte;
+ EFI_BOOT_SCRIPT_MEM_READ_WRITE ScriptMemReadWrite;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_MEM_READ_WRITE) + (WidthInByte * 2));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptMemReadWrite.OpCode = EFI_BOOT_SCRIPT_MEM_READ_WRITE_OPCODE;
+ ScriptMemReadWrite.Length = Length;
+ ScriptMemReadWrite.Width = Width;
+ ScriptMemReadWrite.Address = Address;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptMemReadWrite , sizeof (EFI_BOOT_SCRIPT_MEM_READ_WRITE));
+ CopyMem ((VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_MEM_READ_WRITE)), Data, WidthInByte);
+ CopyMem ((VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_MEM_READ_WRITE) + WidthInByte), DataMask, WidthInByte);
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Adds a record for a PCI configuration space write operation into a specified boot script table.
+
+ @param Width The width of the I/O operations.Enumerated in S3_BOOT_SCRIPT_LIB_WIDTH.
+ @param Address The address within the PCI configuration space.
+ @param Count The number of PCI operations to perform.
+ @param Buffer The source buffer from which to write the data.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSavePciCfgWrite (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN VOID *Buffer
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ UINT8 WidthInByte;
+ EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE ScriptPciWrite;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE) + (WidthInByte * Count));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptPciWrite.OpCode = EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE_OPCODE;
+ ScriptPciWrite.Length = Length;
+ ScriptPciWrite.Width = Width;
+ ScriptPciWrite.Address = Address;
+ ScriptPciWrite.Count = (UINT32) Count;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptPciWrite, sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE));
+ CopyMem ((VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE)), Buffer, WidthInByte * Count);
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Adds a record for a PCI configuration space modify operation into a specified boot script table.
+
+ @param Width The width of the I/O operations.Enumerated in S3_BOOT_SCRIPT_LIB_WIDTH.
+ @param Address The address within the PCI configuration space.
+ @param Data A pointer to the data to be OR-ed.The size depends on Width.
+ @param DataMask A pointer to the data mask to be AND-ed.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN__SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSavePciCfgReadWrite (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT64 Address,
+ IN VOID *Data,
+ IN VOID *DataMask
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ UINT8 WidthInByte;
+ EFI_BOOT_SCRIPT_PCI_CONFIG_READ_WRITE ScriptPciReadWrite;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_READ_WRITE) + (WidthInByte * 2));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptPciReadWrite.OpCode = EFI_BOOT_SCRIPT_PCI_CONFIG_READ_WRITE_OPCODE;
+ ScriptPciReadWrite.Length = Length;
+ ScriptPciReadWrite.Width = Width;
+ ScriptPciReadWrite.Address = Address;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptPciReadWrite, sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_READ_WRITE));
+ CopyMem ((VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_READ_WRITE)), Data, WidthInByte);
+ CopyMem (
+ (VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_READ_WRITE) + WidthInByte),
+ DataMask,
+ WidthInByte
+ );
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Adds a record for a PCI configuration space modify operation into a specified boot script table.
+
+ @param Width The width of the I/O operations.Enumerated in S3_BOOT_SCRIPT_LIB_WIDTH.
+ @param Segment The PCI segment number for Address.
+ @param Address The address within the PCI configuration space.
+ @param Count The number of PCI operations to perform.
+ @param Buffer The source buffer from which to write the data.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSavePciCfg2Write (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT16 Segment,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN VOID *Buffer
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ UINT8 WidthInByte;
+ EFI_BOOT_SCRIPT_PCI_CONFIG2_WRITE ScriptPciWrite2;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_WRITE) + (WidthInByte * Count));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptPciWrite2.OpCode = EFI_BOOT_SCRIPT_PCI_CONFIG2_WRITE_OPCODE;
+ ScriptPciWrite2.Length = Length;
+ ScriptPciWrite2.Width = Width;
+ ScriptPciWrite2.Address = Address;
+ ScriptPciWrite2.Segment = Segment;
+ ScriptPciWrite2.Count = (UINT32)Count;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptPciWrite2, sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_WRITE));
+ CopyMem ((VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_WRITE)), Buffer, WidthInByte * Count);
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Adds a record for a PCI configuration space modify operation into a specified boot script table.
+
+ @param Width The width of the I/O operations.Enumerated in S3_BOOT_SCRIPT_LIB_WIDTH.
+ @param Segment The PCI segment number for Address.
+ @param Address The address within the PCI configuration space.
+ @param Data A pointer to the data to be OR-ed. The size depends on Width.
+ @param DataMask A pointer to the data mask to be AND-ed.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSavePciCfg2ReadWrite (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT16 Segment,
+ IN UINT64 Address,
+ IN VOID *Data,
+ IN VOID *DataMask
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ UINT8 WidthInByte;
+ EFI_BOOT_SCRIPT_PCI_CONFIG2_READ_WRITE ScriptPciReadWrite2;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_READ_WRITE) + (WidthInByte * 2));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptPciReadWrite2.OpCode = EFI_BOOT_SCRIPT_PCI_CONFIG2_READ_WRITE_OPCODE;
+ ScriptPciReadWrite2.Length = Length;
+ ScriptPciReadWrite2.Width = Width;
+ ScriptPciReadWrite2.Segment = Segment;
+ ScriptPciReadWrite2.Address = Address;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptPciReadWrite2, sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_READ_WRITE));
+ CopyMem ((VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_READ_WRITE)), Data, WidthInByte);
+ CopyMem (
+ (VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_READ_WRITE) + WidthInByte),
+ DataMask,
+ WidthInByte
+ );
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Adds a record for an SMBus command execution into a specified boot script table.
+
+ @param SmBusAddress Address that encodes the SMBUS Slave Address, SMBUS Command, SMBUS Data Length, and PEC.
+ @param Operation Indicates which particular SMBus protocol it will use to execute the SMBus
+ transactions.
+ @param Length A pointer to signify the number of bytes that this operation will do.
+ @param Buffer Contains the value of data to execute to the SMBUS slave device.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveSmbusExecute (
+ IN UINTN SmBusAddress,
+ IN EFI_SMBUS_OPERATION Operation,
+ IN UINTN *Length,
+ IN VOID *Buffer
+ )
+{
+ UINT8 DataSize;
+ UINT8 *Script;
+ EFI_BOOT_SCRIPT_SMBUS_EXECUTE ScriptSmbusExecute;
+
+ DataSize = (UINT8)(sizeof (EFI_BOOT_SCRIPT_SMBUS_EXECUTE) + (*Length));
+
+ Script = S3BootScriptGetEntryAddAddress (DataSize);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptSmbusExecute.OpCode = EFI_BOOT_SCRIPT_SMBUS_EXECUTE_OPCODE;
+ ScriptSmbusExecute.Length = DataSize;
+ ScriptSmbusExecute.SmBusAddress = (UINT64) SmBusAddress;
+ ScriptSmbusExecute.Operation = Operation;
+ ScriptSmbusExecute.DataSize = (UINT32) *Length;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptSmbusExecute, sizeof (EFI_BOOT_SCRIPT_SMBUS_EXECUTE));
+ CopyMem (
+ (VOID*)(Script + sizeof (EFI_BOOT_SCRIPT_SMBUS_EXECUTE)),
+ Buffer,
+ (*Length)
+ );
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Adds a record for an execution stall on the processor into a specified boot script table.
+
+ @param Duration Duration in microseconds of the stall
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveStall (
+ IN UINTN Duration
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ EFI_BOOT_SCRIPT_STALL ScriptStall;
+
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_STALL));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptStall.OpCode = EFI_BOOT_SCRIPT_STALL_OPCODE;
+ ScriptStall.Length = Length;
+ ScriptStall.Duration = Duration;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptStall, sizeof (EFI_BOOT_SCRIPT_STALL));
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Adds a record for an execution stall on the processor into a specified boot script table.
+
+ @param EntryPoint Entry point of the code to be dispatched.
+ @param Context Argument to be passed into the EntryPoint of the code to be dispatched.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveDispatch2 (
+ IN VOID *EntryPoint,
+ IN VOID *Context
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ EFI_BOOT_SCRIPT_DISPATCH_2 ScriptDispatch2;
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_DISPATCH_2));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptDispatch2.OpCode = EFI_BOOT_SCRIPT_DISPATCH_2_OPCODE;
+ ScriptDispatch2.Length = Length;
+ ScriptDispatch2.EntryPoint = (EFI_PHYSICAL_ADDRESS)(UINTN)EntryPoint;
+ ScriptDispatch2.Context = (EFI_PHYSICAL_ADDRESS)(UINTN)Context;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptDispatch2, sizeof (EFI_BOOT_SCRIPT_DISPATCH_2));
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+
+}
+/**
+ Adds a record for memory reads of the memory location and continues when the exit criteria is
+ satisfied or after a defined duration.
+
+ @param Width The width of the memory operations.
+ @param Address The base address of the memory operations.
+ @param BitMask A pointer to the bit mask to be AND-ed with the data read from the register.
+ @param BitValue A pointer to the data value after to be Masked.
+ @param Duration Duration in microseconds of the stall.
+ @param LoopTimes The times of the register polling.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveMemPoll (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT64 Address,
+ IN VOID *BitMask,
+ IN VOID *BitValue,
+ IN UINTN Duration,
+ IN UINTN LoopTimes
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ UINT8 WidthInByte;
+ EFI_BOOT_SCRIPT_MEM_POLL ScriptMemPoll;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_MEM_POLL) + (WidthInByte * 2));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptMemPoll.OpCode = EFI_BOOT_SCRIPT_MEM_POLL_OPCODE;
+ ScriptMemPoll.Length = Length;
+ ScriptMemPoll.Width = Width;
+ ScriptMemPoll.Address = Address;
+ ScriptMemPoll.Duration = Duration;
+ ScriptMemPoll.LoopTimes = LoopTimes;
+
+ CopyMem ((UINT8 *) (Script + sizeof (EFI_BOOT_SCRIPT_MEM_POLL)), BitValue, WidthInByte);
+ CopyMem ((UINT8 *) (Script + sizeof (EFI_BOOT_SCRIPT_MEM_POLL) + WidthInByte), BitMask, WidthInByte);
+ CopyMem ((VOID*)Script, (VOID*)&ScriptMemPoll, sizeof (EFI_BOOT_SCRIPT_MEM_POLL));
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Store arbitrary information in the boot script table. This opcode is a no-op on dispatch and is only
+ used for debugging script issues.
+
+ @param InformationLength Length of the data in bytes
+ @param Information Information to be logged in the boot scrpit
+
+ @retval RETURN_UNSUPPORTED If entering runtime, this method will not support.
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveInformation (
+ IN UINT32 InformationLength,
+ IN VOID *Information
+ )
+{
+ RETURN_STATUS Status;
+ UINT8 Length;
+ UINT8 *Script;
+ EFI_PHYSICAL_ADDRESS Buffer;
+ EFI_BOOT_SCRIPT_INFORMATION ScriptInformation;
+
+ if (mS3BootScriptTablePtr->AtRuntime) {
+ return RETURN_UNSUPPORTED;
+ }
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_INFORMATION));
+
+ Buffer = 0xFFFFFFFF;
+ Status = gBS->AllocatePages (
+ AllocateMaxAddress,
+ EfiACPIMemoryNVS,
+ EFI_SIZE_TO_PAGES(InformationLength),
+ &Buffer
+ );
+ if (EFI_ERROR (Status)) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptInformation.OpCode = EFI_BOOT_SCRIPT_INFORMATION_OPCODE;
+ ScriptInformation.Length = Length;
+
+
+ ScriptInformation.InformationLength = InformationLength;
+
+ CopyMem ((VOID *)(UINTN)Buffer, Information,(UINTN) InformationLength);
+ ScriptInformation.Information = (EFI_PHYSICAL_ADDRESS) (UINTN) Buffer;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptInformation, sizeof (EFI_BOOT_SCRIPT_INFORMATION));
+ return RETURN_SUCCESS;
+
+}
+/**
+ Store a string in the boot script table. This opcode is a no-op on dispatch and is only
+ used for debugging script issues.
+
+ @param String The string to save to boot script table
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveInformationAsciiString (
+ IN CONST CHAR8 *String
+ )
+{
+ return S3BootScriptSaveInformation (
+ (UINT32) AsciiStrLen (String) + 1,
+ (VOID*) String
+ );
+}
+/**
+ Adds a record for dispatching specified arbitrary code into a specified boot script table.
+
+ @param EntryPoint Entry point of the code to be dispatched.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveDispatch (
+ IN VOID *EntryPoint
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ EFI_BOOT_SCRIPT_DISPATCH ScriptDispatch;
+
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_DISPATCH));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptDispatch.OpCode = EFI_BOOT_SCRIPT_DISPATCH_OPCODE;
+ ScriptDispatch.Length = Length;
+ ScriptDispatch.EntryPoint = (EFI_PHYSICAL_ADDRESS)(UINTN)EntryPoint;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptDispatch, sizeof (EFI_BOOT_SCRIPT_DISPATCH));
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+
+}
+/**
+ Adds a record for I/O reads the I/O location and continues when the exit criteria is satisfied or after a
+ defined duration.
+
+ @param Width The width of the I/O operations.
+ @param Address The base address of the I/O operations.
+ @param Data The comparison value used for the polling exit criteria.
+ @param DataMask Mask used for the polling criteria. The bits in the bytes below Width which are zero
+ in Data are ignored when polling the memory address.
+ @param Delay The number of 100ns units to poll. Note that timer available may be of poorer
+ granularity so the delay may be longer.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSaveIoPoll (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT64 Address,
+ IN VOID *Data,
+ IN VOID *DataMask,
+ IN UINT64 Delay
+ )
+{
+ UINT8 WidthInByte;
+ UINT8 *Script;
+ UINT8 Length;
+ EFI_BOOT_SCRIPT_IO_POLL ScriptIoPoll;
+
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_IO_POLL) + (WidthInByte * 2));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptIoPoll.OpCode = EFI_BOOT_SCRIPT_IO_POLL_OPCODE;
+ ScriptIoPoll.Length = (UINT8) (sizeof (EFI_BOOT_SCRIPT_IO_POLL) + (WidthInByte * 2));
+ ScriptIoPoll.Width = Width;
+ ScriptIoPoll.Address = Address;
+ ScriptIoPoll.Delay = Delay;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptIoPoll, sizeof (EFI_BOOT_SCRIPT_IO_POLL));
+ CopyMem ((UINT8 *) (Script + sizeof (EFI_BOOT_SCRIPT_IO_POLL)), Data, WidthInByte);
+ CopyMem ((UINT8 *) (Script + sizeof (EFI_BOOT_SCRIPT_IO_POLL) + WidthInByte), DataMask, WidthInByte);
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+
+/**
+ Adds a record for PCI configuration space reads and continues when the exit criteria is satisfied or
+ after a defined duration.
+
+ @param Width The width of the I/O operations.
+ @param Address The address within the PCI configuration space.
+ @param Data The comparison value used for the polling exit criteria.
+ @param DataMask Mask used for the polling criteria. The bits in the bytes below Width which are zero
+ in Data are ignored when polling the memory address
+ @param Delay The number of 100ns units to poll. Note that timer available may be of poorer
+ granularity so the delay may be longer.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSavePciPoll (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT64 Address,
+ IN VOID *Data,
+ IN VOID *DataMask,
+ IN UINT64 Delay
+)
+{
+ UINT8 *Script;
+ UINT8 WidthInByte;
+ UINT8 Length;
+ EFI_BOOT_SCRIPT_PCI_CONFIG_POLL ScriptPciPoll;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_POLL) + (WidthInByte * 2));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptPciPoll.OpCode = EFI_BOOT_SCRIPT_PCI_CONFIG_POLL_OPCODE;
+ ScriptPciPoll.Length = (UINT8) (sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_POLL) + (WidthInByte * 2));
+ ScriptPciPoll.Width = Width;
+ ScriptPciPoll.Address = Address;
+ ScriptPciPoll.Delay = Delay;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptPciPoll, sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_POLL));
+ CopyMem ((UINT8 *) (Script + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_POLL)), Data, WidthInByte);
+ CopyMem ((UINT8 *) (Script + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_POLL) + WidthInByte), DataMask, WidthInByte);
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Adds a record for PCI configuration space reads and continues when the exit criteria is satisfied or
+ after a defined duration.
+
+ @param Width The width of the I/O operations.
+ @param Segment The PCI segment number for Address.
+ @param Address The address within the PCI configuration space.
+ @param Data The comparison value used for the polling exit criteria.
+ @param DataMask Mask used for the polling criteria. The bits in the bytes below Width which are zero
+ in Data are ignored when polling the memory address
+ @param Delay The number of 100ns units to poll. Note that timer available may be of poorer
+ granularity so the delay may be longer.
+
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+ @note A known Limitations in the implementation: When interpreting the opcode EFI_BOOT_SCRIPT_PCI_CONFIG2_WRITE_OPCODE
+ EFI_BOOT_SCRIPT_PCI_CONFIG2_READ_WRITE_OPCODE and EFI_BOOT_SCRIPT_PCI_CONFIG2_POLL_OPCODE, the 'Segment' parameter is assumed as
+ Zero, or else, assert.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptSavePci2Poll (
+ IN S3_BOOT_SCRIPT_LIB_WIDTH Width,
+ IN UINT16 Segment,
+ IN UINT64 Address,
+ IN VOID *Data,
+ IN VOID *DataMask,
+ IN UINT64 Delay
+)
+{
+ UINT8 WidthInByte;
+ UINT8 *Script;
+ UINT8 Length;
+ EFI_BOOT_SCRIPT_PCI_CONFIG2_POLL ScriptPci2Poll;
+
+ WidthInByte = (UINT8) (0x01 << (Width & 0x03));
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_POLL) + (WidthInByte * 2));
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ //
+ // Build script data
+ //
+ ScriptPci2Poll.OpCode = EFI_BOOT_SCRIPT_PCI_CONFIG2_POLL_OPCODE;
+ ScriptPci2Poll.Length = (UINT8) (sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_POLL) + (WidthInByte * 2));
+ ScriptPci2Poll.Width = Width;
+ ScriptPci2Poll.Segment = Segment;
+ ScriptPci2Poll.Address = Address;
+ ScriptPci2Poll.Delay = Delay;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptPci2Poll, sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_POLL));
+ CopyMem ((UINT8 *) (Script + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_POLL)), Data, WidthInByte);
+ CopyMem ((UINT8 *) (Script + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG2_POLL) + WidthInByte), DataMask, WidthInByte);
+
+ SyncBootScript ();
+
+ return RETURN_SUCCESS;
+}
+/**
+ Do the calculation of start address from which a new s3 boot script entry will write into.
+
+ @param EntryLength The new entry length.
+ @param Position specifies the position in the boot script table where the opcode will be
+ inserted, either before or after, depending on BeforeOrAfter.
+ @param BeforeOrAfter The flag to indicate to insert the nod before or after the position.
+ This parameter is effective when InsertFlag is TRUE
+ @param Script return out the position from which the a new s3 boot script entry will write into
+**/
+VOID
+S3BootScriptCalculateInsertAddress (
+ IN UINT8 EntryLength,
+ IN VOID *Position OPTIONAL,
+ IN BOOLEAN BeforeOrAfter OPTIONAL,
+ OUT UINT8 **Script
+ )
+{
+ UINTN TableLength;
+ UINT8 *S3TableBase;
+ UINTN PositionOffset;
+ EFI_BOOT_SCRIPT_COMMON_HEADER ScriptHeader;
+ //
+ // The entry inserting to table is already added to the end of the table
+ //
+ TableLength = mS3BootScriptTablePtr->TableLength - EntryLength;
+ S3TableBase = mS3BootScriptTablePtr->TableBase ;
+ //
+ // calculate the Position offset
+ //
+ if (Position != NULL) {
+ PositionOffset = (UINTN) ((UINT8 *)Position - S3TableBase);
+
+ //
+ // If the BeforeOrAfter is FALSE, that means to insert the node right after the node.
+ //
+ if (!BeforeOrAfter) {
+ CopyMem ((VOID*)&ScriptHeader, Position, sizeof(EFI_BOOT_SCRIPT_COMMON_HEADER));
+ PositionOffset += (ScriptHeader.Length);
+ }
+ //
+ // Insert the node before the adjusted Position
+ //
+ CopyMem (S3TableBase+PositionOffset+EntryLength, S3TableBase+PositionOffset, TableLength - PositionOffset);
+ //
+ // calculate the the start address for the new entry.
+ //
+ *Script = S3TableBase + PositionOffset;
+
+ } else {
+ if (!BeforeOrAfter) {
+ //
+ // Insert the node to the end of the table
+ //
+ *Script = S3TableBase + TableLength;
+ } else {
+ //
+ // Insert the node to the beginning of the table
+ //
+ PositionOffset = (UINTN) sizeof(EFI_BOOT_SCRIPT_TABLE_HEADER);
+ CopyMem (S3TableBase+PositionOffset+EntryLength, S3TableBase+PositionOffset, TableLength - PositionOffset);
+ *Script = S3TableBase + PositionOffset;
+ }
+ }
+}
+/**
+ Move the last boot script entry to the position
+
+ @param BeforeOrAfter Specifies whether the opcode is stored before (TRUE) or after (FALSE) the position
+ in the boot script table specified by Position. If Position is NULL or points to
+ NULL then the new opcode is inserted at the beginning of the table (if TRUE) or end
+ of the table (if FALSE).
+ @param Position On entry, specifies the position in the boot script table where the opcode will be
+ inserted, either before or after, depending on BeforeOrAfter. On exit, specifies
+ the position of the inserted opcode in the boot script table.
+
+ @retval RETURN_OUT_OF_RESOURCES The table is not available.
+ @retval RETURN_INVALID_PARAMETER The Position is not a valid position in the boot script table.
+ @retval RETURN_SUCCESS Opcode is inserted.
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptMoveLastOpcode (
+ IN BOOLEAN BeforeOrAfter,
+ IN OUT VOID **Position OPTIONAL
+)
+{
+ UINT8* Script;
+ VOID *TempPosition;
+ UINTN StartAddress;
+ UINT32 TableLength;
+ EFI_BOOT_SCRIPT_COMMON_HEADER ScriptHeader;
+ BOOLEAN ValidatePosition;
+ UINT8* LastOpcode;
+ UINT8 TempBootScriptEntry[BOOT_SCRIPT_NODE_MAX_LENGTH];
+
+ ValidatePosition = FALSE;
+ TempPosition = (Position == NULL) ? NULL:(*Position);
+ Script = mS3BootScriptTablePtr->TableBase;
+ if (Script == 0) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ StartAddress = (UINTN) Script;
+ TableLength = mS3BootScriptTablePtr->TableLength;
+ Script = Script + sizeof(EFI_BOOT_SCRIPT_TABLE_HEADER);
+ LastOpcode = Script;
+ //
+ // Find the last boot Script Entry which is not the terminate node
+ //
+ while ((UINTN) Script < (UINTN) (StartAddress + TableLength)) {
+ CopyMem ((VOID*)&ScriptHeader, Script, sizeof(EFI_BOOT_SCRIPT_COMMON_HEADER));
+ if (TempPosition != NULL && TempPosition == Script) {
+ //
+ // If the position is specified, the position must be pointed to a boot script entry start address.
+ //
+ ValidatePosition = TRUE;
+ }
+ if (ScriptHeader.OpCode != S3_BOOT_SCRIPT_LIB_TERMINATE_OPCODE) {
+ LastOpcode = Script;
+ }
+ Script = Script + ScriptHeader.Length;
+ }
+ //
+ // If the position is specified, but not the start of a boot script entry, it is a invalid input
+ //
+ if (TempPosition != NULL && !ValidatePosition) {
+ return RETURN_INVALID_PARAMETER;
+ }
+
+ CopyMem ((VOID*)&ScriptHeader, LastOpcode, sizeof(EFI_BOOT_SCRIPT_COMMON_HEADER));
+
+ CopyMem((VOID*)TempBootScriptEntry, LastOpcode, ScriptHeader.Length);
+ //
+ // Find the right position to write the node in
+ //
+ S3BootScriptCalculateInsertAddress (
+ ScriptHeader.Length,
+ TempPosition,
+ BeforeOrAfter,
+ &Script
+ );
+ //
+ // Copy the node to Boot script table
+ //
+ CopyMem((VOID*)Script, (VOID*)TempBootScriptEntry, ScriptHeader.Length);
+ //
+ // return out the Position
+ //
+ if (Position != NULL) {
+ *Position = Script;
+ }
+ return RETURN_SUCCESS;
+}
+/**
+ Create a Label node in the boot script table.
+
+ @param BeforeOrAfter Specifies whether the opcode is stored before (TRUE) or after (FALSE) the position
+ in the boot script table specified by Position. If Position is NULL or points to
+ NULL then the new opcode is inserted at the beginning of the table (if TRUE) or end
+ of the table (if FALSE).
+ @param Position On entry, specifies the position in the boot script table where the opcode will be
+ inserted, either before or after, depending on BeforeOrAfter. On exit, specifies
+ the position of the inserted opcode in the boot script table.
+ @param InformationLength Length of the label in bytes
+ @param Information Label to be logged in the boot scrpit
+
+ @retval RETURN_INVALID_PARAMETER The Position is not a valid position in the boot script table.
+ @retval RETURN_OUT_OF_RESOURCES Not enough memory for the table do operation.
+ @retval RETURN_SUCCESS Opcode is added.
+
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptLabelInternal (
+ IN BOOLEAN BeforeOrAfter,
+ IN OUT VOID **Position OPTIONAL,
+ IN UINT32 InformationLength,
+ IN CONST CHAR8 *Information
+ )
+{
+ UINT8 Length;
+ UINT8 *Script;
+ VOID *Buffer;
+ EFI_BOOT_SCRIPT_INFORMATION ScriptInformation;
+
+ Length = (UINT8)(sizeof (EFI_BOOT_SCRIPT_INFORMATION) + InformationLength);
+
+ Script = S3BootScriptGetEntryAddAddress (Length);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+ Buffer = Script + sizeof (EFI_BOOT_SCRIPT_INFORMATION);
+ //
+ // Build script data
+ //
+ ScriptInformation.OpCode = S3_BOOT_SCRIPT_LIB_LABEL_OPCODE;
+ ScriptInformation.Length = Length;
+
+
+ ScriptInformation.InformationLength = InformationLength;
+
+ AsciiStrnCpy (Buffer, Information,(UINTN) InformationLength);
+ ScriptInformation.Information = (EFI_PHYSICAL_ADDRESS) (UINTN) Buffer;
+
+ CopyMem ((VOID*)Script, (VOID*)&ScriptInformation, sizeof (EFI_BOOT_SCRIPT_INFORMATION));
+
+ return S3BootScriptMoveLastOpcode (BeforeOrAfter, Position);
+
+}
+/**
+ Find a label within the boot script table and, if not present, optionally create it.
+
+ @param BeforeOrAfter Specifies whether the opcode is stored before (TRUE)
+ or after (FALSE) the position in the boot script table
+ specified by Position.
+ @param CreateIfNotFound Specifies whether the label will be created if the label
+ does not exists (TRUE) or not (FALSE).
+ @param Position On entry, specifies the position in the boot script table
+ where the opcode will be inserted, either before or after,
+ depending on BeforeOrAfter. On exit, specifies the position
+ of the inserted opcode in the boot script table.
+ @param Label Points to the label which will be inserted in the boot script table.
+
+ @retval EFI_SUCCESS The operation succeeded. A record was added into the
+ specified script table.
+ @retval EFI_INVALID_PARAMETER The parameter is illegal or the given boot script is not supported.
+ If the opcode is unknow or not supported because of the PCD
+ Feature Flags.
+ @retval EFI_OUT_OF_RESOURCES There is insufficient memory to store the boot script.
+
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptLabel (
+ IN BOOLEAN BeforeOrAfter,
+ IN BOOLEAN CreateIfNotFound,
+ IN OUT VOID **Position OPTIONAL,
+ IN CONST CHAR8 *Label
+ )
+{
+ UINT8* Script;
+ UINTN StartAddress;
+ UINT32 TableLength;
+ EFI_BOOT_SCRIPT_COMMON_HEADER ScriptHeader;
+ EFI_BOOT_SCRIPT_TABLE_HEADER TableHeader;
+ UINT32 LabelLength;
+ //
+ // Assume Label is not NULL
+ //
+ if (Label == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Check that the script is initialized without adding an entry to the script.
+ // The code must search for the label first befor it knows if a new entry needs
+ // to be added.
+ //
+ Script = S3BootScriptGetEntryAddAddress (0);
+ if (Script == NULL) {
+ return RETURN_OUT_OF_RESOURCES;
+ }
+
+ //
+ // Check the header and search for existing label.
+ //
+ Script = mS3BootScriptTablePtr->TableBase;
+ CopyMem ((VOID*)&TableHeader, Script, sizeof(EFI_BOOT_SCRIPT_TABLE_HEADER));
+ if (TableHeader.OpCode != S3_BOOT_SCRIPT_LIB_TABLE_OPCODE) {
+ return EFI_INVALID_PARAMETER;
+ }
+ StartAddress = (UINTN) Script;
+ TableLength = mS3BootScriptTablePtr->TableLength;
+ Script = Script + TableHeader.Length;
+ while ((UINTN) Script < (UINTN) (StartAddress + TableLength)) {
+
+ CopyMem ((VOID*)&ScriptHeader, Script, sizeof(EFI_BOOT_SCRIPT_COMMON_HEADER));
+ if (ScriptHeader.OpCode == S3_BOOT_SCRIPT_LIB_LABEL_OPCODE) {
+ if (AsciiStrCmp ((CHAR8 *)(UINTN)(Script+sizeof(EFI_BOOT_SCRIPT_INFORMATION)), Label) == 0) {
+ (*Position) = Script;
+ return EFI_SUCCESS;
+ }
+ }
+ Script = Script + ScriptHeader.Length;
+ }
+ if (CreateIfNotFound) {
+ LabelLength = (UINT32)AsciiStrSize(Label);
+ return S3BootScriptLabelInternal (BeforeOrAfter,Position, LabelLength, Label);
+ } else {
+ return EFI_NOT_FOUND;
+ }
+}
+
+/**
+ Compare two positions in the boot script table and return their relative position.
+ @param Position1 The positions in the boot script table to compare
+ @param Position2 The positions in the boot script table to compare
+ @param RelativePosition On return, points to the result of the comparison
+
+ @retval EFI_SUCCESS The operation succeeded. A record was added into the
+ specified script table.
+ @retval EFI_INVALID_PARAMETER The parameter is illegal or the given boot script is not supported.
+ If the opcode is unknow or not supported because of the PCD
+ Feature Flags.
+ @retval EFI_OUT_OF_RESOURCES There is insufficient memory to store the boot script.
+
+**/
+RETURN_STATUS
+EFIAPI
+S3BootScriptCompare (
+ IN UINT8 *Position1,
+ IN UINT8 *Position2,
+ OUT UINTN *RelativePosition
+ )
+{
+ UINT8* Script;
+ UINT32 TableLength;
+
+ Script = mS3BootScriptTablePtr->TableBase;
+ if (Script == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ if (RelativePosition == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ TableLength = ((EFI_BOOT_SCRIPT_TABLE_HEADER*)Script)->TableLength;
+ //
+ // If in boot time, TableLength does not include the termination node. so add it up
+ //
+ if (!mS3BootScriptTablePtr->AtRuntime) {
+ TableLength += sizeof(EFI_BOOT_SCRIPT_TERMINATE);
+ }
+ if (Position1 < Script || Position1 > Script+TableLength) {
+ return EFI_INVALID_PARAMETER;
+ }
+ if (Position2 < Script || Position2 > Script+TableLength) {
+ return EFI_INVALID_PARAMETER;
+ }
+ *RelativePosition = (Position1 < Position2)?-1:((Position1 == Position2)?0:1);
+
+ return EFI_SUCCESS;
+}
+
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