/** @file
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CPU Security PreMemory Config Block.
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Copyright (c) 2021, 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_SECURITY_PREMEM_CONFIG_H_
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#define _CPU_SECURITY_PREMEM_CONFIG_H_
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#define CPU_SECURITY_PREMEM_CONFIG_REVISION 1
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extern EFI_GUID gCpuSecurityPreMemConfigGuid;
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#pragma pack (push,1)
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/**
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CPU Security PreMemory Configuration Structure.
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<b>Revision 1</b>:
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- Initial version.
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**/
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typedef struct {
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CONFIG_BLOCK_HEADER Header; ///< Config Block Header
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UINT32 PrmrrSize; ///< PRMRR Size.<b>Software Control: 0x0</b> 32MB: 0x2000000, 64MB: 0x4000000, 128 MB: 0x8000000, 256 MB: 0x10000000, 512 MB: 0x20000000
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UINT16 BiosSize; ///< Flash information for BIOS Guard: BIOS Size in KB.
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UINT8 Reserved[2]; ///< Reserved for future use
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/**
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Enable or Disable BIOS Guard; 0: Disable; <b>1: Enable</b>.
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- This is an optional feature and can be opted out.
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- If this policy is set to Disabled, the policies in the BIOS_GUARD_CONFIG will be ignored.
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- If PeiBiosGuardLibNull is used, this policy will have no effect.
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**/
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UINT32 BiosGuard : 1;
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UINT32 BiosGuardToolsInterface : 1; ///< BIOS Guard Tools Interface; <b>0: Disable</b>, 1:Enable
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/**
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Enable or Disable Software Guard Extensions; <b>0: Disable</b>; 1: Enable.
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- This is an optional feature and can be opted out.
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- If this policy is set to Disabled, the policies in the CPU_SGX_CONFIG will be ignored.
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- If BaseSoftwareGuardLibNull is used, this policy will have no effect.
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**/
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UINT32 EnableSgx : 1;
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/**
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Enable or Disable Trusted Execution Technology; <b>0: Disable</b>; 1: Enable.
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- This is an optional feature and can be opted out.
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- If this policy is set to Disabled, the policies in the CPU_TXT_PREMEM_CONFIG will be ignored.
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- If PeiTxtLibNull is used, this policy will have no effect.
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**/
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UINT32 Txt : 1;
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UINT32 SkipStopPbet : 1; ///< <b>(Test)</b> Skip Stop PBET Timer; <b>0: Disable</b>; 1: Enable.
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///
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/// <b>(Test)</b> This policy indicates whether or not BIOS should allocate PRMRR memory for C6DRAM power gating feature.
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/// - 0: Don't allocate any PRMRR memory for C6DRAM power gating feature.
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/// - <b>1: Allocate PRMRR memory for C6DRAM power gating feature</b>.
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///
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UINT32 EnableC6Dram : 1;
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UINT32 ResetAux : 1; ///< <b>(Test)</b> Reset Auxiliary content, <b>0: Disabled</b>, 1: Enabled
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UINT32 TxtAcheckRequest : 1; ///< <b>(Test)</b> AcheckRequest <b>0: Disabled</b>, 1: Enabled. When Enabled, it will call Acheck regardless of crashcode value
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UINT32 RsvdBits : 24; ///< Reserved for future use
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} CPU_SECURITY_PREMEM_CONFIG;
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#pragma pack (pop)
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#endif // _CPU_SECURITY_CONFIG_H_
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