diff options
Diffstat (limited to 'MdeModulePkg/Universal/Acpi/AcpiTableDxe/AmlOption.c')
| -rw-r--r-- | MdeModulePkg/Universal/Acpi/AcpiTableDxe/AmlOption.c | 208 |
1 files changed, 114 insertions, 94 deletions
diff --git a/MdeModulePkg/Universal/Acpi/AcpiTableDxe/AmlOption.c b/MdeModulePkg/Universal/Acpi/AcpiTableDxe/AmlOption.c index d0374c5de8..fbcf340e4b 100644 --- a/MdeModulePkg/Universal/Acpi/AcpiTableDxe/AmlOption.c +++ b/MdeModulePkg/Universal/Acpi/AcpiTableDxe/AmlOption.c @@ -25,95 +25,103 @@ **/
EFI_STATUS
AmlParseOptionTerm (
- IN AML_BYTE_ENCODING *AmlByteEncoding,
- IN UINT8 *Buffer,
- IN UINTN MaxBufferSize,
- IN AML_OP_PARSE_INDEX TermIndex,
- OUT EFI_ACPI_DATA_TYPE *DataType,
- OUT VOID **Data,
- OUT UINTN *DataSize
+ IN AML_BYTE_ENCODING *AmlByteEncoding,
+ IN UINT8 *Buffer,
+ IN UINTN MaxBufferSize,
+ IN AML_OP_PARSE_INDEX TermIndex,
+ OUT EFI_ACPI_DATA_TYPE *DataType,
+ OUT VOID **Data,
+ OUT UINTN *DataSize
)
{
- AML_BYTE_ENCODING *ChildAmlByteEncoding;
- EFI_STATUS Status;
+ AML_BYTE_ENCODING *ChildAmlByteEncoding;
+ EFI_STATUS Status;
if (DataType != NULL) {
*DataType = AmlTypeToAcpiType (AmlByteEncoding->Format[TermIndex - 1]);
}
+
if (Data != NULL) {
*Data = Buffer;
}
+
//
// Parse term according to AML type
//
switch (AmlByteEncoding->Format[TermIndex - 1]) {
- case AML_UINT8:
- *DataSize = sizeof(UINT8);
- break;
- case AML_UINT16:
- *DataSize = sizeof(UINT16);
- break;
- case AML_UINT32:
- *DataSize = sizeof(UINT32);
- break;
- case AML_UINT64:
- *DataSize = sizeof(UINT64);
- break;
- case AML_STRING:
- *DataSize = AsciiStrSize((CHAR8 *)Buffer);
- break;
- case AML_NAME:
- Status = AmlGetNameStringSize (Buffer, DataSize);
- if (EFI_ERROR (Status)) {
- return EFI_INVALID_PARAMETER;
- }
- break;
- case AML_OBJECT:
- ChildAmlByteEncoding = AmlSearchByOpByte (Buffer);
- if (ChildAmlByteEncoding == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // NOTE: We need override DataType here, if there is a case the AML_OBJECT is AML_NAME.
- // We need convert type from EFI_ACPI_DATA_TYPE_CHILD to EFI_ACPI_DATA_TYPE_NAME_STRING.
- // We should not return CHILD because there is NO OpCode for NameString.
- //
- if ((ChildAmlByteEncoding->Attribute & AML_IS_NAME_CHAR) != 0) {
- if (DataType != NULL) {
- *DataType = AmlTypeToAcpiType (AML_NAME);
- }
+ case AML_UINT8:
+ *DataSize = sizeof (UINT8);
+ break;
+ case AML_UINT16:
+ *DataSize = sizeof (UINT16);
+ break;
+ case AML_UINT32:
+ *DataSize = sizeof (UINT32);
+ break;
+ case AML_UINT64:
+ *DataSize = sizeof (UINT64);
+ break;
+ case AML_STRING:
+ *DataSize = AsciiStrSize ((CHAR8 *)Buffer);
+ break;
+ case AML_NAME:
Status = AmlGetNameStringSize (Buffer, DataSize);
if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
+
break;
- }
+ case AML_OBJECT:
+ ChildAmlByteEncoding = AmlSearchByOpByte (Buffer);
+ if (ChildAmlByteEncoding == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
- //
- // It is real AML_OBJECT
- //
- *DataSize = AmlGetObjectSize (
- ChildAmlByteEncoding,
- Buffer,
- MaxBufferSize
- );
- if (*DataSize == 0) {
- return EFI_INVALID_PARAMETER;
- }
- break;
- case AML_NONE:
+ //
+ // NOTE: We need override DataType here, if there is a case the AML_OBJECT is AML_NAME.
+ // We need convert type from EFI_ACPI_DATA_TYPE_CHILD to EFI_ACPI_DATA_TYPE_NAME_STRING.
+ // We should not return CHILD because there is NO OpCode for NameString.
+ //
+ if ((ChildAmlByteEncoding->Attribute & AML_IS_NAME_CHAR) != 0) {
+ if (DataType != NULL) {
+ *DataType = AmlTypeToAcpiType (AML_NAME);
+ }
+
+ Status = AmlGetNameStringSize (Buffer, DataSize);
+ if (EFI_ERROR (Status)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ break;
+ }
+
+ //
+ // It is real AML_OBJECT
+ //
+ *DataSize = AmlGetObjectSize (
+ ChildAmlByteEncoding,
+ Buffer,
+ MaxBufferSize
+ );
+ if (*DataSize == 0) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ break;
+ case AML_NONE:
//
// No term
//
- case AML_OPCODE:
- default:
- ASSERT (FALSE);
- return EFI_INVALID_PARAMETER;
+ case AML_OPCODE:
+ default:
+ ASSERT (FALSE);
+ return EFI_INVALID_PARAMETER;
}
+
if (*DataSize > MaxBufferSize) {
return EFI_INVALID_PARAMETER;
}
+
return EFI_SUCCESS;
}
@@ -135,13 +143,13 @@ AmlParseOptionTerm ( **/
EFI_STATUS
AmlParseOptionCommon (
- IN AML_BYTE_ENCODING *AmlByteEncoding,
- IN UINT8 *Buffer,
- IN UINTN MaxBufferSize,
- IN AML_OP_PARSE_INDEX Index,
- OUT EFI_ACPI_DATA_TYPE *DataType,
- OUT VOID **Data,
- OUT UINTN *DataSize
+ IN AML_BYTE_ENCODING *AmlByteEncoding,
+ IN UINT8 *Buffer,
+ IN UINTN MaxBufferSize,
+ IN AML_OP_PARSE_INDEX Index,
+ OUT EFI_ACPI_DATA_TYPE *DataType,
+ OUT VOID **Data,
+ OUT UINTN *DataSize
)
{
UINT8 *CurrentBuffer;
@@ -163,6 +171,7 @@ AmlParseOptionCommon ( if (Index != AML_OP_PARSE_INDEX_GET_SIZE) {
return EFI_INVALID_PARAMETER;
}
+
//
// return NameString size
//
@@ -170,9 +179,11 @@ AmlParseOptionCommon ( if (EFI_ERROR (Status)) {
return EFI_INVALID_PARAMETER;
}
+
if (*DataSize > MaxBufferSize) {
return EFI_INVALID_PARAMETER;
}
+
return EFI_SUCCESS;
}
@@ -186,27 +197,31 @@ AmlParseOptionCommon ( //
if (Index != AML_OP_PARSE_INDEX_GET_SIZE) {
*DataType = EFI_ACPI_DATA_TYPE_OPCODE;
- *Data = (VOID *)CurrentBuffer;
+ *Data = (VOID *)CurrentBuffer;
}
+
if (*CurrentBuffer == AML_EXT_OP) {
OpLength = 2;
} else {
OpLength = 1;
}
+
*DataSize = OpLength;
if (Index == AML_OP_PARSE_INDEX_GET_OPCODE) {
return EFI_SUCCESS;
}
+
if (OpLength > MaxBufferSize) {
return EFI_INVALID_PARAMETER;
}
+
CurrentBuffer += OpLength;
//
// 2. Skip PkgLength field, if have
//
if ((AmlByteEncoding->Attribute & AML_HAS_PKG_LENGTH) != 0) {
- PkgOffset = AmlGetPkgLength(CurrentBuffer, &PkgLength);
+ PkgOffset = AmlGetPkgLength (CurrentBuffer, &PkgLength);
//
// Override MaxBufferSize if it is valid PkgLength
//
@@ -219,6 +234,7 @@ AmlParseOptionCommon ( PkgOffset = 0;
PkgLength = 0;
}
+
CurrentBuffer += PkgOffset;
//
@@ -250,7 +266,7 @@ AmlParseOptionCommon ( // Parse next one
//
CurrentBuffer += *DataSize;
- TermIndex ++;
+ TermIndex++;
}
//
@@ -259,6 +275,7 @@ AmlParseOptionCommon ( if ((UINTN)CurrentBuffer > (UINTN)Buffer + MaxBufferSize) {
return EFI_INVALID_PARAMETER;
}
+
if ((UINTN)CurrentBuffer == (UINTN)Buffer + MaxBufferSize) {
if (Index != AML_OP_PARSE_INDEX_GET_SIZE) {
return EFI_INVALID_PARAMETER;
@@ -289,23 +306,23 @@ AmlParseOptionCommon ( **/
UINTN
AmlGetObjectSize (
- IN AML_BYTE_ENCODING *AmlByteEncoding,
- IN UINT8 *Buffer,
- IN UINTN MaxBufferSize
+ IN AML_BYTE_ENCODING *AmlByteEncoding,
+ IN UINT8 *Buffer,
+ IN UINTN MaxBufferSize
)
{
- EFI_STATUS Status;
- UINTN DataSize;
+ EFI_STATUS Status;
+ UINTN DataSize;
Status = AmlParseOptionCommon (
- AmlByteEncoding,
- Buffer,
- MaxBufferSize,
- AML_OP_PARSE_INDEX_GET_SIZE,
- NULL,
- NULL,
- &DataSize
- );
+ AmlByteEncoding,
+ Buffer,
+ MaxBufferSize,
+ AML_OP_PARSE_INDEX_GET_SIZE,
+ NULL,
+ NULL,
+ &DataSize
+ );
if (EFI_ERROR (Status)) {
return 0;
} else {
@@ -322,7 +339,7 @@ AmlGetObjectSize ( **/
CHAR8 *
AmlGetObjectName (
- IN EFI_AML_HANDLE *AmlHandle
+ IN EFI_AML_HANDLE *AmlHandle
)
{
AML_BYTE_ENCODING *AmlByteEncoding;
@@ -346,6 +363,7 @@ AmlGetObjectName ( break;
}
}
+
ASSERT (TermIndex != 0);
//
@@ -361,6 +379,7 @@ AmlGetObjectName ( if (EFI_ERROR (Status)) {
return NULL;
}
+
ASSERT (DataType == EFI_ACPI_DATA_TYPE_NAME_STRING);
return NameString;
@@ -377,8 +396,8 @@ AmlGetObjectName ( **/
EFI_STATUS
AmlGetOffsetAfterLastOption (
- IN EFI_AML_HANDLE *AmlHandle,
- OUT UINT8 **Buffer
+ IN EFI_AML_HANDLE *AmlHandle,
+ OUT UINT8 **Buffer
)
{
EFI_ACPI_DATA_TYPE DataType;
@@ -408,6 +427,7 @@ AmlGetOffsetAfterLastOption ( if (DataType == EFI_ACPI_DATA_TYPE_OPCODE) {
*Buffer += AmlGetPkgLength (*Buffer, &DataSize);
}
+
return EFI_SUCCESS;
}
@@ -427,11 +447,11 @@ AmlGetOffsetAfterLastOption ( **/
EFI_STATUS
AmlParseOptionHandleCommon (
- IN EFI_AML_HANDLE *AmlHandle,
- IN AML_OP_PARSE_INDEX Index,
- OUT EFI_ACPI_DATA_TYPE *DataType,
- OUT VOID **Data,
- OUT UINTN *DataSize
+ IN EFI_AML_HANDLE *AmlHandle,
+ IN AML_OP_PARSE_INDEX Index,
+ OUT EFI_ACPI_DATA_TYPE *DataType,
+ OUT VOID **Data,
+ OUT UINTN *DataSize
)
{
return AmlParseOptionCommon (
|