This adds #defines and struct typedefs for the various structure types in the ACPI 6.4 CXL Early Discovery Table (CEDT).

Signed-off-by: Yuquan Wang wangyuquan1236@phytium.com.cn --- MdePkg/Include/IndustryStandard/Acpi64.h | 5 ++ .../IndustryStandard/CXLEarlyDiscoveryTable.h | 69 +++++++++++++++++++ 2 files changed, 74 insertions(+) create mode 100644 MdePkg/Include/IndustryStandard/CXLEarlyDiscoveryTable.h

diff --git a/MdePkg/Include/IndustryStandard/Acpi64.h b/MdePkg/Include/IndustryStandard/Acpi64.h index bbe6a3c9eb..c988de8ebf 100644 --- a/MdePkg/Include/IndustryStandard/Acpi64.h +++ b/MdePkg/Include/IndustryStandard/Acpi64.h @@ -3169,6 +3169,11 @@ typedef struct { /// #define EFI_ACPI_6_4_XEN_PROJECT_TABLE_SIGNATURE SIGNATURE_32('X', 'E', 'N', 'V')

+/// +/// "CEDT" CXL Early Discovery Table +/// +#define EFI_ACPI_6_4_CXL_EARLY_DISCOVERY_TABLE_SIGNATURE SIGNATURE_32 ('C', 'E', 'D', 'T') + #pragma pack()

#endif diff --git a/MdePkg/Include/IndustryStandard/CXLEarlyDiscoveryTable.h b/MdePkg/Include/IndustryStandard/CXLEarlyDiscoveryTable.h new file mode 100644 index 0000000000..84f88dc737 --- /dev/null +++ b/MdePkg/Include/IndustryStandard/CXLEarlyDiscoveryTable.h @@ -0,0 +1,69 @@ +/** @file + ACPI CXL Early Discovery Table (CEDT) definitions. + + Copyright (c) 2024, Phytium Technology Co Ltd. All rights reserved. + +**/ + +#ifndef __CXL_Early_Discovery_TABLE_H__ +#define __CXL_Early_Discovery_TABLE_H__ + +#include <IndustryStandard/Acpi.h> +#include <IndustryStandard/Acpi64.h> + +#define EFI_ACPI_CXL_Early_Discovery_TABLE_REVISION_01 0x1 //CXL2.0 +#define EFI_ACPI_CXL_Early_Discovery_TABLE_REVISION_02 0x2 //CXL3.1 + +#define EFI_ACPI_CEDT_TYPE_CHBS 0x0 +#define EFI_ACPI_CEDT_TYPE_CFMWS 0x1 + +#pragma pack(1) + +/// +/// Table header +/// +typedef struct { + EFI_ACPI_DESCRIPTION_HEADER Header; +} EFI_ACPI_6_4_CXL_Early_Discovery_TABLE; + +/// +/// Node header definition shared by all structure types +/// +typedef struct { + UINT8 Type; + UINT8 Reserved; + UINT16 Length; +} EFI_ACPI_6_4_CEDT_Structure; + +/// +/// Definition for CXL Host Bridge Structure +/// +typedef struct { + EFI_ACPI_6_4_CEDT_Structure header; + UINT32 UID; + UINT32 CXLVersion; + UINT32 Reserved; + UINT64 Base; + UINT64 Length; +} EFI_ACPI_6_4_CXL_Host_Bridge_Structure; + +/// +/// Definition for CXL Fixed Memory Window Structure +/// +typedef struct { + EFI_ACPI_6_4_CEDT_Structure header; + UINT32 Reserved; + UINT64 BaseHPA; + UINT64 WindowSize; + UINT8 InterleaveMembers; + UINT8 InterleaveArithmetic; + UINT16 Reserved1; + UINT32 Granularity; + UINT16 Restrictions; + UINT16 QtgId; + UINT32 FirstTarget; +} EFI_ACPI_6_4_CXL_Fixed_Memory_Window_Structure; + +#pragma pack() + +#endif