e7e8ea27d4
This module consumes SMM Registers HOB (SMI_GBL_EN and SMI_APM_EN) to install SMM control 2 protocol gEfiSmmControl2ProtocolGuid. The protocol activate() would set SMI_GBL_EN and SMI_APM_EN and trigger SMI by writing to IO port 0xB3 and 0xB2. Signed-off-by: Guo Dong <guo.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Maurice Ma <maurice.ma@intel.com> Cc: Benjamin You <benjamin.you@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Reviewed-by: Benjamin You <benjamin.you@intel.com>
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/** @file
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This file defines the SMM info hob structure.
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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 PAYLOAD_SMM_REGISTER_INFO_GUID_H_
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#define PAYLOAD_SMM_REGISTER_INFO_GUID_H_
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#include <IndustryStandard/Acpi.h>
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///
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/// SMM Information GUID
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///
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extern EFI_GUID gSmmRegisterInfoGuid;
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///
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/// Reuse ACPI definition
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/// AddressSpaceId(0xC0-0xFF) is defined by OEM for MSR and other spaces
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///
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typedef EFI_ACPI_3_0_GENERIC_ADDRESS_STRUCTURE PLD_GENERIC_ADDRESS;
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#define REGISTER_ID_SMI_GBL_EN 1
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#define REGISTER_ID_SMI_GBL_EN_LOCK 2
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#define REGISTER_ID_SMI_EOS 3
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#define REGISTER_ID_SMI_APM_EN 4
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#define REGISTER_ID_SMI_APM_STS 5
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#pragma pack(1)
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typedef struct {
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UINT64 Id;
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UINT64 Value;
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PLD_GENERIC_ADDRESS Address;
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} PLD_GENERIC_REGISTER;
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typedef struct {
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UINT16 Revision;
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UINT16 Reserved;
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UINT32 Count;
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PLD_GENERIC_REGISTER Registers[0];
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} PLD_SMM_REGISTERS;
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#pragma pack()
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#endif
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