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/** @file
Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
Module Name:
SmmScriptSave.c
Abstract:
ScriptTableSave module at run time
--*/
#include "SmmScriptSave.h"
//
// internal functions
//
EFI_STATUS
BootScriptIoWrite (
IN EFI_SMM_SCRIPT_TABLE *ScriptTable,
IN VA_LIST Marker
);
EFI_STATUS
BootScriptPciCfgWrite (
IN EFI_SMM_SCRIPT_TABLE *ScriptTable,
IN VA_LIST Marker
);
VOID
SmmCopyMem (
IN UINT8 *Destination,
IN UINT8 *Source,
IN UINTN ByteCount
);
//
// Function implementations
//
EFI_STATUS
SmmBootScriptWrite (
IN OUT EFI_SMM_SCRIPT_TABLE *ScriptTable,
IN UINTN Type,
IN UINT16 OpCode,
...
)
{
EFI_STATUS Status;
VA_LIST Marker;
if (ScriptTable == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Build script according to opcode
//
switch ( OpCode ) {
case EFI_BOOT_SCRIPT_IO_WRITE_OPCODE:
VA_START(Marker, OpCode);
Status = BootScriptIoWrite (ScriptTable, Marker);
VA_END(Marker);
break;
case EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE_OPCODE:
VA_START(Marker, OpCode);
Status = BootScriptPciCfgWrite(ScriptTable, Marker);
VA_END(Marker);
break;
default:
Status = EFI_SUCCESS;
break;
}
return Status;
}
EFI_STATUS
SmmBootScriptCreateTable (
IN OUT EFI_SMM_SCRIPT_TABLE *ScriptTable,
IN UINTN Type
)
{
BOOT_SCRIPT_POINTERS Script;
UINT8 *Buffer;
if (ScriptTable == NULL) {
return EFI_INVALID_PARAMETER;
}
Buffer = (UINT8*) ((UINTN)(*ScriptTable));
//
// Fill Table Header
//
Script.Raw = Buffer;
Script.TableInfo->OpCode = EFI_BOOT_SCRIPT_TABLE_OPCODE;
Script.TableInfo->Length = sizeof(EFI_BOOT_SCRIPT_TABLE_HEADER);
Script.TableInfo->TableLength = sizeof(EFI_BOOT_SCRIPT_TABLE_HEADER);
//
// Update current table pointer
//
*ScriptTable = *ScriptTable + sizeof(EFI_BOOT_SCRIPT_TABLE_HEADER);
return EFI_SUCCESS;
}
EFI_STATUS
SmmBootScriptCloseTable (
IN EFI_SMM_SCRIPT_TABLE ScriptTableBase,
IN EFI_SMM_SCRIPT_TABLE ScriptTablePtr,
IN UINTN Type
)
{
BOOT_SCRIPT_POINTERS Script;
//
// Add final "termination" node to script table
//
Script.Raw = (UINT8*) ((UINTN)ScriptTablePtr);
Script.Terminate->OpCode = EFI_BOOT_SCRIPT_TERMINATE_OPCODE;
Script.Terminate->Length = sizeof (EFI_BOOT_SCRIPT_TERMINATE);
ScriptTablePtr += sizeof (EFI_BOOT_SCRIPT_TERMINATE);
//
// Update Table Header
//
Script.Raw = (UINT8*) ((UINTN)ScriptTableBase);
Script.TableInfo->OpCode = EFI_BOOT_SCRIPT_TABLE_OPCODE;
Script.TableInfo->Length = sizeof (EFI_BOOT_SCRIPT_TABLE_HEADER);
Script.TableInfo->TableLength = (UINT32)(ScriptTablePtr - ScriptTableBase);
return EFI_SUCCESS;
}
EFI_STATUS
BootScriptIoWrite (
IN EFI_SMM_SCRIPT_TABLE *ScriptTable,
IN VA_LIST Marker
)
{
BOOT_SCRIPT_POINTERS Script;
EFI_BOOT_SCRIPT_WIDTH Width;
UINTN Address;
UINTN Count;
UINT8 *Buffer;
UINTN NodeLength;
UINT8 WidthInByte;
Width = VA_ARG(Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG(Marker, UINTN);
Count = VA_ARG(Marker, UINTN);
Buffer = VA_ARG(Marker, UINT8*);
WidthInByte = (UINT8)(0x01 << (Width & 0x03));
Script.Raw = (UINT8*) ((UINTN)(*ScriptTable));
NodeLength = sizeof (EFI_BOOT_SCRIPT_IO_WRITE) + (WidthInByte * Count);
//
// Build script data
//
Script.IoWrite->OpCode = EFI_BOOT_SCRIPT_IO_WRITE_OPCODE;
Script.IoWrite->Length = (UINT8)(NodeLength);
Script.IoWrite->Width = Width;
Script.IoWrite->Address = Address;
Script.IoWrite->Count = (UINT32)Count;
SmmCopyMem (
(UINT8*)(Script.Raw + sizeof (EFI_BOOT_SCRIPT_IO_WRITE)),
Buffer,
WidthInByte * Count
);
//
// Update Script table pointer
//
*ScriptTable = *ScriptTable + NodeLength;
return EFI_SUCCESS;
}
EFI_STATUS
BootScriptPciCfgWrite (
IN EFI_SMM_SCRIPT_TABLE *ScriptTable,
IN VA_LIST Marker
)
{
BOOT_SCRIPT_POINTERS Script;
EFI_BOOT_SCRIPT_WIDTH Width;
UINT64 Address;
UINTN Count;
UINT8 *Buffer;
UINTN NodeLength;
UINT8 WidthInByte;
Width = VA_ARG(Marker, EFI_BOOT_SCRIPT_WIDTH);
Address = VA_ARG(Marker, UINT64);
Count = VA_ARG(Marker, UINTN);
Buffer = VA_ARG(Marker, UINT8*);
WidthInByte = (UINT8)(0x01 << (Width & 0x03));
Script.Raw = (UINT8*) ((UINTN)(*ScriptTable));
NodeLength = sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE) + (WidthInByte * Count);
//
// Build script data
//
Script.PciWrite->OpCode = EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE_OPCODE;
Script.PciWrite->Length = (UINT8)(NodeLength);
Script.PciWrite->Width = Width;
Script.PciWrite->Address = Address;
Script.PciWrite->Count = (UINT32)Count;
SmmCopyMem (
(UINT8*)(Script.Raw + sizeof (EFI_BOOT_SCRIPT_PCI_CONFIG_WRITE)),
Buffer,
WidthInByte * Count
);
//
// Update Script table pointer
//
*ScriptTable = *ScriptTable + NodeLength;
return EFI_SUCCESS;
}
VOID
SmmCopyMem (
IN UINT8 *Destination,
IN UINT8 *Source,
IN UINTN ByteCount
)
{
UINTN Index;
for (Index = 0; Index < ByteCount; Index++, Destination++, Source++) {
*Destination = *Source;
}
}
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