MdePkg/Include/Register/Amd/Fam17Msr.h

   1 /** @file
   2   MSR Definitions.
   3
   4   Provides defines for Machine Specific Registers(MSR) indexes. Data structures
   5   are provided for MSRs that contain one or more bit fields.  If the MSR value
   6   returned is a single 32-bit or 64-bit value, then a data structure is not
   7   provided for that MSR.
   8
   9   Copyright (c) 2017, Advanced Micro Devices. All rights reserved.<BR>
  10   SPDX-License-Identifier: BSD-2-Clause-Patent
  11
  12   @par Specification Reference:
  13   AMD64 Architecture Programming Manual volume 2, March 2017, Sections 15.34
  14
  15 **/
  16
  17 #ifndef __FAM17_MSR_H__
  18 #define __FAM17_MSR_H__
  19
  20 /**
  21   Secure Encrypted Virtualization (SEV) status register
  22
  23 **/
  24 #define MSR_SEV_STATUS                     0xc0010131
  25
  26 /**
  27   MSR information returned for #MSR_SEV_STATUS
  28 **/
  29 typedef union {
  30   ///
  31   /// Individual bit fields
  32   ///
  33   struct {
  34     ///
  35     /// [Bit 0] Secure Encrypted Virtualization (Sev) is enabled
  36     ///
  37     UINT32  SevBit:1;
  38
  39     ///
  40     /// [Bit 1] Secure Encrypted Virtualization Encrypted State (SevEs) is enabled
  41     ///
  42     UINT32  SevEsBit:1;
  43
  44     UINT32  Reserved:30;
  45   } Bits;
  46   ///
  47   /// All bit fields as a 32-bit value
  48   ///
  49   UINT32  Uint32;
  50   ///
  51   /// All bit fields as a 64-bit value
  52   ///
  53   UINT64  Uint64;
  54 } MSR_SEV_STATUS_REGISTER;
  55
  56 #endif