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|
/** @file
Copyright (C) 2020-2025 Advanced Micro Devices, Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "LocalAmlLib.h"
#include <Filecode.h>
#define FILECODE LIBRARY_DXEAMLGENERATIONLIB_AMLNAMESPACEMODIFIEROBJECTS_FILECODE
/**
Creates a Scope (ObjectName, Object)
Object must be created between AmlStart and AmlClose Phase
DefScope := ScopeOp PkgLength NameString TermList
ScopeOp := 0x10
@param[in] Phase - Either AmlStart or AmlClose
@param[in] String - Location
@param[in,out] ListHead - Linked list has completed String Object after
AmlClose.
@retval EFI_SUCCESS
@retval Error status
**/
EFI_STATUS
EFIAPI
AmlScope (
IN AML_FUNCTION_PHASE Phase,
IN CHAR8 *String,
IN OUT LIST_ENTRY *ListHead
)
{
EFI_STATUS Status;
AML_OBJECT_INSTANCE *Object;
AML_OBJECT_INSTANCE *ChildObject;
UINTN ChildCount;
if ((Phase >= AmlInvalid) || (String == NULL) || (ListHead == NULL)) {
return EFI_INVALID_PARAMETER;
}
Status = EFI_DEVICE_ERROR;
Object = NULL;
ChildObject = NULL;
switch (Phase) {
case AmlStart:
Status = InternalAppendNewAmlObject (&Object, String, ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Start %a object\n", __func__, String));
goto Done;
}
// Start required PkgLength
Status = AmlPkgLength (AmlStart, ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Start PkgLength for %a object\n", __func__, String));
goto Done;
}
// Insert required NameString
Status = AmlOPNameString (String, ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Insert NameString for %a object\n", __func__, String));
goto Done;
}
// TermList is too complicated and must be added outside
break;
case AmlClose:
// TermList should be closed already
// Close required PkgLength before finishing Object
Status = AmlPkgLength (AmlClose, ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Close PkgLength for %a object\n", __func__, String));
goto Done;
}
Status = InternalAmlLocateObjectByIdentifier (&Object, String, ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Locate %a object\n", __func__, String));
goto Done;
}
// Get rid of original Identifier data
InternalFreeAmlObjectData (Object);
// Collect child data and delete children
Status = InternalAmlCollapseAndReleaseChildren (
&ChildObject,
&ChildCount,
&Object->Link,
ListHead
);
if (EFI_ERROR (Status) ||
(ChildObject->Data == NULL) ||
(ChildObject->DataSize == 0))
{
DEBUG ((DEBUG_ERROR, "%a: ERROR: %a has no child data.\n", __func__, String));
goto Done;
}
// Scope Op is one byte
Object->DataSize = ChildObject->DataSize + 1;
Object->Data = AllocatePool (Object->DataSize);
if (Object->Data == NULL) {
Status = EFI_OUT_OF_RESOURCES;
DEBUG ((DEBUG_ERROR, "%a: ERROR: allocate Object->Data for %a\n", __func__, String));
goto Done;
}
Object->Data[0] = AML_SCOPE_OP;
CopyMem (&Object->Data[1], ChildObject->Data, ChildObject->DataSize);
InternalFreeAmlObject (&ChildObject, ListHead);
Object->Completed = TRUE;
Status = EFI_SUCCESS;
break;
default:
Status = EFI_DEVICE_ERROR;
break;
}
Done:
if (EFI_ERROR (Status)) {
InternalFreeAmlObject (&Object, ListHead);
InternalFreeAmlObject (&ChildObject, ListHead);
}
return Status;
}
/**
Creates a Name (ObjectName, Object)
Object must be created between AmlStart and AmlClose Phase
DefName := NameOp NameString ChildObjectData
NameOp := 0x08
@param[in] Phase - Either AmlStart or AmlClose
@param[in] String - Object name
@param[in,out] ListHead - Linked list has completed String Object after
AmlClose.
@retval EFI_SUCCESS
@retval Error status
**/
EFI_STATUS
EFIAPI
AmlName (
IN AML_FUNCTION_PHASE Phase,
IN CHAR8 *String,
IN OUT LIST_ENTRY *ListHead
)
{
EFI_STATUS Status;
AML_OBJECT_INSTANCE *Object;
AML_OBJECT_INSTANCE *ChildObject;
UINTN ChildCount;
if ((Phase >= AmlInvalid) || (String == NULL) || (ListHead == NULL)) {
return EFI_INVALID_PARAMETER;
}
Status = EFI_DEVICE_ERROR;
Object = NULL;
ChildObject = NULL;
switch (Phase) {
case AmlStart:
Status = InternalAppendNewAmlObject (&Object, String, ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Start %a object\n", __func__, String));
goto Done;
}
// Insert required NameString
Status = AmlOPNameString (String, ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Start NameString for %a object\n", __func__, String));
goto Done;
}
break;
case AmlClose:
// DataRefObject should be closed already
Status = InternalAmlLocateObjectByIdentifier (&Object, String, ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Locate %a object\n", __func__, String));
goto Done;
}
// Get rid of original Identifier data
InternalFreeAmlObjectData (Object);
// Collect child data and delete children
Status = InternalAmlCollapseAndReleaseChildren (
&ChildObject,
&ChildCount,
&Object->Link,
ListHead
);
if (EFI_ERROR (Status) ||
(ChildObject->Data == NULL) ||
(ChildObject->DataSize == 0))
{
DEBUG ((DEBUG_ERROR, "%a: ERROR: %a has no child data.\n", __func__, String));
goto Done;
}
Object->Data = AllocatePool (ChildObject->DataSize + 1);
// Name Op is one byte
Object->DataSize = ChildObject->DataSize + 1;
if (Object->Data == NULL) {
Status = EFI_OUT_OF_RESOURCES;
DEBUG ((DEBUG_ERROR, "%a: ERROR: allocate Object->Data for %a\n", __func__, String));
goto Done;
}
Object->Data[0] = AML_NAME_OP;
CopyMem (
&Object->Data[1],
ChildObject->Data,
ChildObject->DataSize
);
InternalFreeAmlObject (&ChildObject, ListHead);
Object->Completed = TRUE;
Status = EFI_SUCCESS;
break;
default:
Status = EFI_DEVICE_ERROR;
break;
}
Done:
if (EFI_ERROR (Status)) {
InternalFreeAmlObject (&Object, ListHead);
InternalFreeAmlObject (&ChildObject, ListHead);
}
return Status;
}
/**
Creates an Alias (SourceObject, AliasObject)
DefAlias := AliasOp NameString NameString
AliasOp := 0x06
@param[in] SourceName - Any named Source Object NameString
@param[in] AliasName - Alias Object NameString
@param[in,out] ListHead - Linked list has completed the Alias Object
@retval EFI_SUCCESS
@retval Error status
**/
EFI_STATUS
EFIAPI
AmlOPAlias (
IN CHAR8 *SourceName,
IN CHAR8 *AliasName,
IN OUT LIST_ENTRY *ListHead
)
{
EFI_STATUS Status;
AML_OBJECT_INSTANCE *Object;
AML_OBJECT_INSTANCE *ChildObject;
UINTN ChildCount;
if ((SourceName == NULL) || (AliasName == NULL) || (ListHead == NULL)) {
return EFI_INVALID_PARAMETER;
}
Status = EFI_DEVICE_ERROR;
Object = NULL;
ChildObject = NULL;
// Start ALIAS object
Status = InternalAppendNewAmlObject (&Object, "ALIAS", ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Cannot append ALIAS object\n", __func__));
goto Done;
}
// Insert required Object (to be aliased) NameString
Status = AmlOPNameString (SourceName, ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Cannot create NameString: %a \n", __func__, SourceName));
goto Done;
}
// Insert required Alias NameString
Status = AmlOPNameString (AliasName, ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Cannot create NameString: %a \n", __func__, AliasName));
goto Done;
}
Status = InternalAmlLocateObjectByIdentifier (&Object, "ALIAS", ListHead);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: ERROR: Cannot locate ALIAS object\n", __func__));
goto Done;
}
// Get rid of original Identifier data
InternalFreeAmlObjectData (Object);
// Collect child data and delete children
Status = InternalAmlCollapseAndReleaseChildren (
&ChildObject,
&ChildCount,
&Object->Link,
ListHead
);
if (EFI_ERROR (Status) ||
(ChildObject->Data == NULL) ||
(ChildObject->DataSize == 0))
{
DEBUG ((DEBUG_ERROR, "%a: ERROR: %a has no child data.\n", __func__, SourceName));
goto Done;
}
Object->Data = AllocateZeroPool (ChildObject->DataSize + 1);
// Alias Op is one byte
Object->DataSize = ChildObject->DataSize + 1;
if (Object->Data == NULL) {
Status = EFI_OUT_OF_RESOURCES;
DEBUG ((DEBUG_ERROR, "%a: ERROR: allocate Object->Data for %a\n", __func__, SourceName));
goto Done;
}
Object->Data[0] = AML_ALIAS_OP;
CopyMem (
&Object->Data[1],
ChildObject->Data,
ChildObject->DataSize
);
InternalFreeAmlObject (&ChildObject, ListHead);
Object->Completed = TRUE;
Status = EFI_SUCCESS;
Done:
if (EFI_ERROR (Status)) {
InternalFreeAmlObject (&Object, ListHead);
InternalFreeAmlObject (&ChildObject, ListHead);
}
return Status;
}
|
