[PATCH] DynamicTablesPkg: Add support to build _DSD


Jeff Brasen
 

Add APIs needed to build _DSD with different UUIDs.
This is per ACPI specification 6.4 s6.2.5.

Adds support for building data packages with format
Package {"Name", Integer}

Signed-off-by: Jeff Brasen <jbrasen@...>
---
.../Include/Library/AmlLib/AmlLib.h | 50 ++++
.../Common/AmlLib/CodeGen/AmlCodeGen.c | 236 ++++++++++++++++++
2 files changed, 286 insertions(+)

diff --git a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
index 6f214c0dfa..30cab3f6bb 100644
--- a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
+++ b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
@@ -1280,6 +1280,56 @@ AmlAddLpiState (
IN AML_OBJECT_NODE_HANDLE LpiNode
);

+/** AML code generation for a _DSD device data object.
+
+ AmlAddDeviceDataDescriptorPackage (Uuid, ParentNode, NewObjectNode) is
+ equivalent of the following ASL code:
+ ToUUID(Uuid),
+ Package () {}
+
+ @ingroup CodeGenApis
+
+ @param [in] Uuid The Uuid of the descriptor to be created
+ @param [in] DsdNode Node of the DSD Package.
+ @param [out] PackageNode If success, contains the created package node.
+
+ @retval EFI_SUCCESS Success.
+ @retval EFI_INVALID_PARAMETER Invalid parameter.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+**/
+EFI_STATUS
+EFIAPI
+AmlAddDeviceDataDescriptorPackage (
+ IN CONST EFI_GUID *Uuid,
+ IN AML_OBJECT_NODE_HANDLE DsdNode,
+ OUT AML_OBJECT_NODE_HANDLE *PackageNode
+ );
+
+/** AML code generation to add a package with a name and value,
+ * to a parent package
+
+ AmlAddNameValuePackage ("Name", Value, ParentNode) is
+ equivalent of the following ASL code:
+ Package (2) {"Name", Value}
+
+ @ingroup CodeGenApis
+
+ @param [in] Name String to place in first entry of package
+ @param [in] Value Integer to place in second entry of package
+ @param [in] PackageNode Package to add new sub package to.
+
+ @retval EFI_SUCCESS Success.
+ @retval EFI_INVALID_PARAMETER Invalid parameter.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+**/
+EFI_STATUS
+EFIAPI
+AmlAddNameIntegerPackage (
+ IN CHAR8 *Name,
+ IN UINT64 Value,
+ IN AML_OBJECT_NODE_HANDLE PackageNode
+ );
+
// DEPRECATED APIS
#ifndef DISABLE_NEW_DEPRECATED_INTERFACES

diff --git a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
index e51d2dd7f0..80e43d0e62 100644
--- a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
+++ b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
@@ -2600,3 +2600,239 @@ error_handler:

return Status;
}
+
+/** AML code generation for a _DSD device data object.
+
+ AmlAddDeviceDataDescriptorPackage (Uuid, ParentNode, NewObjectNode) is
+ equivalent of the following ASL code:
+ ToUUID(Uuid),
+ Package () {}
+
+ @ingroup CodeGenApis
+
+ @param [in] Uuid The Uuid of the descriptor to be created
+ @param [in] DsdNode Node of the DSD Package.
+ @param [out] PackageNode If success, contains the created package node.
+
+ @retval EFI_SUCCESS Success.
+ @retval EFI_INVALID_PARAMETER Invalid parameter.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+**/
+EFI_STATUS
+EFIAPI
+AmlAddDeviceDataDescriptorPackage (
+ IN CONST EFI_GUID *Uuid,
+ IN AML_OBJECT_NODE_HANDLE DsdNode,
+ OUT AML_OBJECT_NODE_HANDLE *PackageNode
+ )
+{
+ EFI_STATUS Status;
+ AML_OBJECT_NODE *UuidNode;
+ AML_DATA_NODE *UuidDataNode;
+ AML_OBJECT_NODE_HANDLE DsdEntryList;
+
+ if ((Uuid == NULL) ||
+ (PackageNode == NULL) ||
+ (AmlGetNodeType ((AML_NODE_HANDLE)DsdNode) != EAmlNodeObject) ||
+ (!AmlNodeHasOpCode (DsdNode, AML_NAME_OP, 0)) ||
+ !AmlNameOpCompareName (DsdNode, "_DSD"))
+ {
+ ASSERT (0);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ // Get the Package object node of the _DSD node,
+ // which is the 2nd fixed argument (i.e. index 1).
+ DsdEntryList = (AML_OBJECT_NODE_HANDLE)AmlGetFixedArgument (
+ DsdNode,
+ EAmlParseIndexTerm1
+ );
+ if ((DsdEntryList == NULL) ||
+ (AmlGetNodeType ((AML_NODE_HANDLE)DsdEntryList) != EAmlNodeObject) ||
+ (!AmlNodeHasOpCode (DsdEntryList, AML_PACKAGE_OP, 0)))
+ {
+ ASSERT (0);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *PackageNode = NULL;
+ UuidNode = NULL;
+
+ Status = AmlCodeGenBuffer (NULL, 0, &UuidNode);
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ goto error_handler;
+ }
+
+ Status = AmlCreateDataNode (
+ EAmlNodeDataTypeRaw,
+ (CONST UINT8 *)Uuid,
+ sizeof (EFI_GUID),
+ &UuidDataNode
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ goto error_handler;
+ }
+
+ Status = AmlVarListAddTail (
+ (AML_NODE_HEADER *)UuidNode,
+ (AML_NODE_HEADER *)UuidDataNode
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ goto error_handler;
+ }
+ UuidDataNode = NULL;
+
+ // Append to the the list of _DSD entries.
+ Status = AmlVarListAddTail (
+ (AML_NODE_HANDLE)DsdEntryList,
+ (AML_NODE_HANDLE)UuidNode
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ goto error_handler;
+ }
+
+ Status = AmlCodeGenPackage (PackageNode);
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ goto error_handler;
+ }
+
+ // Append to the the list of _DSD entries.
+ Status = AmlVarListAddTail (
+ (AML_NODE_HANDLE)DsdEntryList,
+ (AML_NODE_HANDLE)*PackageNode
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ goto error_handler;
+ }
+
+ return Status;
+
+error_handler:
+ if (UuidNode != NULL) {
+ //Need to check to detach as there is an error path that have
+ //this attached to the DsdEntry
+ if (AML_NODE_HAS_PARENT (UuidNode)) {
+ AmlDetachNode ((AML_NODE_HANDLE)UuidNode);
+ }
+ AmlDeleteTree ((AML_NODE_HANDLE)UuidNode);
+ }
+
+ if (*PackageNode != NULL) {
+ AmlDeleteTree ((AML_NODE_HANDLE)*PackageNode);
+ *PackageNode = NULL;
+ }
+ if (UuidDataNode != NULL) {
+ AmlDeleteTree ((AML_NODE_HANDLE)UuidDataNode);
+ }
+
+ return Status;
+}
+
+/** AML code generation to add a package with a name and value,
+ * to a parent package
+
+ AmlAddNameValuePackage ("Name", Value, ParentNode) is
+ equivalent of the following ASL code:
+ Package (2) {"Name", Value}
+
+ @ingroup CodeGenApis
+
+ @param [in] Name String to place in first entry of package
+ @param [in] Value Integer to place in second entry of package
+ @param [in] PackageNode Package to add new sub package to.
+
+ @retval EFI_SUCCESS Success.
+ @retval EFI_INVALID_PARAMETER Invalid parameter.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+**/
+EFI_STATUS
+EFIAPI
+AmlAddNameIntegerPackage (
+ IN CHAR8 *Name,
+ IN UINT64 Value,
+ IN AML_OBJECT_NODE_HANDLE PackageNode
+ )
+{
+ EFI_STATUS Status;
+ AML_OBJECT_NODE *NameNode;
+ AML_OBJECT_NODE *ValueNode;
+ AML_OBJECT_NODE *NewPackageNode;
+
+ if ((Name == NULL) ||
+ (AmlGetNodeType ((AML_NODE_HANDLE)PackageNode) != EAmlNodeObject) ||
+ (!AmlNodeHasOpCode (PackageNode, AML_PACKAGE_OP, 0)))
+ {
+ ASSERT (0);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ NewPackageNode = NULL;
+ // The new package entry.
+ Status = AmlCodeGenPackage (&NewPackageNode);
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ return Status;
+ }
+
+ Status = AmlCodeGenString (Name, &NameNode);
+ if (EFI_ERROR (Status)) {
+ ASSERT_EFI_ERROR (Status);
+ goto error_handler;
+ }
+
+ Status = AmlVarListAddTail (
+ (AML_NODE_HANDLE)NewPackageNode,
+ (AML_NODE_HANDLE)NameNode
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ goto error_handler;
+ }
+ NameNode = NULL;
+
+ Status = AmlCodeGenInteger (Value, &ValueNode);
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ goto error_handler;
+ }
+
+ Status = AmlVarListAddTail (
+ (AML_NODE_HANDLE)NewPackageNode,
+ (AML_NODE_HANDLE)ValueNode
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ goto error_handler;
+ }
+ ValueNode = NULL;
+
+ Status = AmlVarListAddTail (
+ (AML_NODE_HANDLE)PackageNode,
+ (AML_NODE_HANDLE)NewPackageNode
+ );
+ if (EFI_ERROR (Status)) {
+ ASSERT (0);
+ goto error_handler;
+ }
+
+ return Status;
+
+error_handler:
+ if (NewPackageNode != NULL) {
+ AmlDeleteTree ((AML_NODE_HANDLE)NewPackageNode);
+ }
+ if (NameNode != NULL) {
+ AmlDeleteTree ((AML_NODE_HANDLE)NameNode);
+ }
+ if (ValueNode != NULL) {
+ AmlDeleteTree ((AML_NODE_HANDLE)ValueNode);
+ }
+
+ return Status;
+}
--
2.25.1

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