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 <wangyuquan1...@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
--
2.34.1
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