Re: [edk2-devel] [edk2-stable202405 RESEND PATCH v2 1/1] DynamicTablesPkg: Adds integer to the AML package node

["Abdul Lateef Attar via groups.io" <AbdulLateef.Attar=amd.com@groups.io>]

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[AMD Official Use Only - General]

Hi Liming,
    This patch provides an API to add integer value to AML package node.
Using this API user can create CXL device with two PNPID.
Without this API user has to rely on static ASL files.

This patch is required for platform who uses DynamicTablesPkg to generate ACPI tables based on this stable release.

Thanks
AbduL
________________________________
From: gaoliming <gaoliming@byosoft.com.cn>
Sent: Thursday, May 9, 2024 1:10 PM
To: devel@edk2.groups.io <devel@edk2.groups.io>; Attar, AbdulLateef (Abdul Lateef) <AbdulLateef.Attar@amd.com>
Cc: 'Pierre Gondois' <pierre.gondois@arm.com>; 'Sami Mujawar' <sami.mujawar@arm.com>
Subject: 回复: [edk2-devel] [edk2-stable202405 RESEND PATCH v2 1/1] DynamicTablesPkg: Adds integer to the AML package node

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Abdul:
  Can you give more information why this change is required for this stable
tag 202405?

Thanks
Liming
> -----邮件原件-----
> 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Abdul Lateef
> Attar via groups.io
> 发送时间: 2024年5月9日 12:49
> 收件人: devel@edk2.groups.io
> 抄送: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>; Pierre Gondois
> <pierre.gondois@arm.com>; Sami Mujawar <sami.mujawar@arm.com>
> 主题: [edk2-devel] [edk2-stable202405 RESEND PATCH v2 1/1]
> DynamicTablesPkg: Adds integer to the AML package node
>
> Adds an AmlAddIntegerToNamedPackage() API to generate AML code,
> which adds an integer value to the package node.
>
> Cc: Pierre Gondois <pierre.gondois@arm.com>
> Cc: Sami Mujawar <sami.mujawar@arm.com>
> Signed-off-by: Abdul Lateef Attar <AbdulLateef.Attar@amd.com>
> ---
>  .../Include/Library/AmlLib/AmlLib.h           | 41 +++++++++++-
>  .../Common/AmlLib/CodeGen/AmlCodeGen.c        | 67
> +++++++++++++++++++
>  2 files changed, 107 insertions(+), 1 deletion(-)
>
> diff --git a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
> b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
> index 82d5464084..4427ab68fa 100644
> --- a/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
> +++ b/DynamicTablesPkg/Include/Library/AmlLib/AmlLib.h
> @@ -2,7 +2,7 @@
>    AML Lib.
>
>    Copyright (c) 2019 - 2023, Arm Limited. All rights reserved.<BR>
> -  Copyright (C) 2023 Advanced Micro Devices, Inc. All rights
reserved.<BR>
> +  Copyright (C) 2023 - 2024, Advanced Micro Devices, Inc. All rights
> reserved.<BR>
>
>    SPDX-License-Identifier: BSD-2-Clause-Patent
>  **/
> @@ -1743,6 +1743,45 @@ AmlAddNameStringToNamedPackage (
>    IN AML_OBJECT_NODE_HANDLE  NamedNode
>    );
>
> +/** Add an integer value to the named package node.
> +
> +  AmlCodeGenNamePackage ("_CID", NULL, &PackageNode);
> +  AmlGetEisaIdFromString ("PNP0A03", &EisaId);
> +  AmlAddIntegerToNamedPackage (EisaId, NameNode);
> +  AmlGetEisaIdFromString ("PNP0A08", &EisaId);
> +  AmlAddIntegerToNamedPackage (EisaId, NameNode);
> +
> +  equivalent of the following ASL code:
> +  Name (_CID, Package (0x02)  // _CID: Compatible ID
> +  {
> +      EisaId ("PNP0A03"),
> +      EisaId ("PNP0A08")
> +  })
> +
> +  The package is added at the tail of the list of the input package node
> +  name:
> +    Name ("NamePackageNode", Package () {
> +      [Pre-existing package entries],
> +      [Newly created integer entry]
> +    })
> +
> +
> +  @ingroup CodeGenApis
> +
> +  @param [in]       Integer       Integer value that need to be added to
> package node.
> +  @param [in, out]  NameNode      Package named node to add the object
> to.
> +
> +  @retval EFI_SUCCESS             Success.
> +  @retval EFI_INVALID_PARAMETER   Invalid parameter.
> +  @retval Others                  Error occurred during the operation.
> +**/
> +EFI_STATUS
> +EFIAPI
> +AmlAddIntegerToNamedPackage (
> +  IN        UINT32                  Integer,
> +  IN  OUT   AML_OBJECT_NODE_HANDLE  NameNode
> +  );
> +
>  /** AML code generation to invoke/call another method.
>
>    This method is a subset implementation of MethodInvocation
> diff --git a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
> b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
> index 22c2d598d0..89fa4e06f8 100644
> --- a/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
> +++ b/DynamicTablesPkg/Library/Common/AmlLib/CodeGen/AmlCodeGen.c
> @@ -3871,6 +3871,73 @@ exit_handler:
>    return Status;
>  }
>
> +/** Add an integer value to the named package node.
> +
> +  AmlCodeGenNamePackage ("_CID", NULL, &PackageNode);
> +  AmlGetEisaIdFromString ("PNP0A03", &EisaId);
> +  AmlAddIntegerToNamedPackage (EisaId, NameNode);
> +  AmlGetEisaIdFromString ("PNP0A08", &EisaId);
> +  AmlAddIntegerToNamedPackage (EisaId, NameNode);
> +
> +  equivalent of the following ASL code:
> +  Name (_CID, Package (0x02)  // _CID: Compatible ID
> +  {
> +      EisaId ("PNP0A03"),
> +      EisaId ("PNP0A08")
> +  })
> +
> +  The package is added at the tail of the list of the input package node
> +  name:
> +    Name ("NamePackageNode", Package () {
> +      [Pre-existing package entries],
> +      [Newly created integer entry]
> +    })
> +
> +
> +  @ingroup CodeGenApis
> +
> +  @param [in]       Integer       Integer value that need to be added to
> package node.
> +  @param [in, out]  NameNode      Package named node to add the object
> to.
> +
> +  @retval EFI_SUCCESS             Success.
> +  @retval EFI_INVALID_PARAMETER   Invalid parameter.
> +  @retval Others                  Error occurred during the operation.
> +**/
> +EFI_STATUS
> +EFIAPI
> +AmlAddIntegerToNamedPackage (
> +  IN        UINT32                  Integer,
> +  IN  OUT   AML_OBJECT_NODE_HANDLE  NameNode
> +  )
> +{
> +  EFI_STATUS       Status;
> +  AML_OBJECT_NODE  *PackageNode;
> +
> +  if (NameNode == NULL) {
> +    ASSERT_EFI_ERROR (FALSE);
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  PackageNode = (AML_OBJECT_NODE_HANDLE)AmlGetFixedArgument (
> +                                          NameNode,
> +                                          EAmlParseIndexTerm1
> +                                          );
> +  if ((PackageNode == NULL)
> ||
> +      (AmlGetNodeType ((AML_NODE_HANDLE)PackageNode) !=
> EAmlNodeObject)  ||
> +      (!AmlNodeHasOpCode (PackageNode, AML_PACKAGE_OP, 0)))
> +  {
> +    ASSERT_EFI_ERROR (FALSE);
> +    return EFI_INVALID_PARAMETER;
> +  }
> +
> +  Status = AmlAddRegisterOrIntegerToPackage (NULL, Integer, PackageNode);
> +  if (EFI_ERROR (Status)) {
> +    ASSERT_EFI_ERROR (Status);
> +  }
> +
> +  return Status;
> +}
> +
>  /** AML code generation to invoke/call another method.
>
>    This method is a subset implementation of MethodInvocation
> --
> 2.34.1
>
>
>
> 
>





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