/** @file
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Protocol used for specifying platform related CPU information and policy setting.
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Copyright (c) 2019 Intel Corporation. All rights reserved. <BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _CPU_POLICY_PROTOCOL_H_
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#define _CPU_POLICY_PROTOCOL_H_
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//
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// DXE_CPU_POLICY_PROTOCOL revisions
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//
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#define DXE_CPU_POLICY_PROTOCOL_REVISION 1
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extern EFI_GUID gDxeCpuPolicyProtocolGuid;
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#pragma pack (push,1)
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/**
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The protocol allows the platform code to publish a set of configuration information that the
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CPU drivers will use to configure the processor in the DXE phase.
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This Policy Protocol needs to be initialized for CPU configuration.
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@note The Protocol has to be published before processor DXE drivers are dispatched.
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**/
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typedef struct {
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/**
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This member specifies the revision of the Cpu Policy protocol. This field is used to indicate backward
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compatible changes to the protocol. Any such changes to this protocol will result in an update in the revision number.
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<b>Revision 1</b>:
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- Initial version
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**/
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/**
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Policies to obtain CPU temperature.
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- <b>0: ACPI thermal management uses EC reported temperature values</b>.
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- 1: ACPI thermal management uses DTS SMM mechanism to obtain CPU temperature values.
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- 2: ACPI Thermal Management uses EC reported temperature values and DTS SMM is used to handle Out of Spec condition.
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**/
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UINT32 EnableDts : 2;
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UINT32 RsvdBit : 30; ///< Reserved bits, align to multiple 32;
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UINT8 Revision; ///< Current revision of policy.
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UINT8 ReservedByte[3]; ///< Reserved bytes, align to multiple 8.
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} DXE_CPU_POLICY_PROTOCOL;
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#pragma pack (pop)
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#endif
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