[edk2-devel] [PATCH v3 4/4] DynamicTablesPkg: Add Aml NameUnicodeString API

Jeff Brasen via groups.io posted 4 patches 5 months, 2 weeks ago
There is a newer version of this series
[edk2-devel] [PATCH v3 4/4] DynamicTablesPkg: Add Aml NameUnicodeString API
Posted by Jeff Brasen via groups.io 5 months, 2 weeks ago
Add API to generate a Name that contains a Unicode string buffer.



Bug 4063340



Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>

Reviewed-by: Swatisri Kantamsetti <swatisrik@nvidia.com>

Reviewed-by: Ashish Singhal <ashishsingha@nvidia.com>

---

 .../Include/Library/AmlLib/AmlLib.h           | 31 +++++++

 .../Common/AmlLib/CodeGen/AmlCodeGen.c        | 86 +++++++++++++++++++

 2 files changed, 117 insertions(+)



diff --git a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h

index f4a4908753..e0dc1340ab 100644

--- a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h

+++ b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h

@@ -958,6 +958,37 @@ AmlCodeGenNameResourceTemplate (

   OUT       AML_OBJECT_NODE_HANDLE  *NewObjectNode   OPTIONAL

   );

 

+/** AML code generation for a Name object node, containing a String.

+

+  AmlCodeGenNameUnicodeString ("_STR", L"String", ParentNode, NewObjectNode) is

+  equivalent of the following ASL code:

+    Name(_STR, Unicode ("String"))

+

+  @ingroup CodeGenApis

+

+  @param  [in] NameString     The new variable name.

+                              Must be a NULL-terminated ASL NameString

+                              e.g.: "DEV0", "DV15.DEV0", etc.

+                              The input string is copied.

+  @param [in]  String         NULL terminated Unicode String to associate to the

+                              NameString.

+  @param [in]  ParentNode     If provided, set ParentNode as the parent

+                              of the node created.

+  @param [out] NewObjectNode  If success, contains the created node.

+

+  @retval EFI_SUCCESS             Success.

+  @retval EFI_INVALID_PARAMETER   Invalid parameter.

+  @retval EFI_OUT_OF_RESOURCES    Failed to allocate memory.

+**/

+EFI_STATUS

+EFIAPI

+AmlCodeGenNameUnicodeString (

+  IN  CONST CHAR8                   *NameString,

+  IN        CHAR16                  *String,

+  IN        AML_NODE_HANDLE         ParentNode      OPTIONAL,

+  OUT       AML_OBJECT_NODE_HANDLE  *NewObjectNode   OPTIONAL

+  );

+

 /** Add a _PRT entry.

 

   AmlCodeGenPrtEntry (0x0FFFF, 0, "LNKA", 0, PrtNameNode) is

diff --git a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c

index d7fec859ef..0eba254193 100644

--- a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c

+++ b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c

@@ -869,6 +869,92 @@ AmlCodeGenNameResourceTemplate (

   return Status;

 }

 

+/** AML code generation for a Name object node, containing a String.

+

+ AmlCodeGenNameUnicodeString ("_STR", L"String", ParentNode, NewObjectNode) is

+ equivalent of the following ASL code:

+   Name(_STR, Unicode ("String"))

+

+ @ingroup CodeGenApis

+

+ @param  [in] NameString     The new variable name.

+                             Must be a NULL-terminated ASL NameString

+                             e.g.: "DEV0", "DV15.DEV0", etc.

+                             The input string is copied.

+ @param [in]  String         NULL terminated Unicode String to associate to the

+                             NameString.

+ @param [in]  ParentNode     If provided, set ParentNode as the parent

+                             of the node created.

+ @param [out] NewObjectNode  If success, contains the created node.

+

+ @retval EFI_SUCCESS             Success.

+ @retval EFI_INVALID_PARAMETER   Invalid parameter.

+ @retval EFI_OUT_OF_RESOURCES    Failed to allocate memory.

+**/

+EFI_STATUS

+EFIAPI

+AmlCodeGenNameUnicodeString (

+  IN  CONST CHAR8                   *NameString,

+  IN        CHAR16                  *String,

+  IN        AML_NODE_HANDLE         ParentNode      OPTIONAL,

+  OUT       AML_OBJECT_NODE_HANDLE  *NewObjectNode   OPTIONAL

+  )

+{

+  EFI_STATUS       Status;

+  AML_OBJECT_NODE  *ObjectNode;

+  AML_DATA_NODE    *DataNode;

+

+  if ((NameString == NULL)  ||

+      (String == NULL)      ||

+      ((ParentNode == NULL) && (NewObjectNode == NULL)))

+  {

+    ASSERT (0);

+    return EFI_INVALID_PARAMETER;

+  }

+

+  Status = AmlCodeGenBuffer (NULL, 0, &ObjectNode);

+  if (EFI_ERROR (Status)) {

+    ASSERT_EFI_ERROR (Status);

+    return Status;

+  }

+

+  Status = AmlCreateDataNode (

+             EAmlNodeDataTypeRaw,

+             (CONST UINT8 *)String,

+             StrSize (String),

+             &DataNode

+             );

+  if (EFI_ERROR (Status)) {

+    ASSERT_EFI_ERROR (Status);

+    AmlDeleteTree ((AML_NODE_HEADER *)ObjectNode);

+    return Status;

+  }

+

+  Status = AmlVarListAddTail (

+             (AML_NODE_HEADER *)ObjectNode,

+             (AML_NODE_HEADER *)DataNode

+             );

+  if (EFI_ERROR (Status)) {

+    ASSERT_EFI_ERROR (Status);

+    AmlDeleteTree ((AML_NODE_HEADER *)ObjectNode);

+    AmlDeleteTree ((AML_NODE_HANDLE)DataNode);

+    return Status;

+  }

+

+  Status = AmlCodeGenName (

+             NameString,

+             ObjectNode,

+             ParentNode,

+             NewObjectNode

+             );

+  if (EFI_ERROR (Status)) {

+    ASSERT (0);

+    AmlDeleteTree ((AML_NODE_HEADER *)ObjectNode);

+  }

+

+  return Status;

+}

+

 /** Add a _PRT entry.

 

   AmlCodeGenPrtEntry (0x0FFFF, 0, "LNKA", 0, PrtNameNode) is

-- 

2.25.1





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